diff --git a/changelog.txt b/changelog.txt
index a937e2fb2..e5bd22e76 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -35,6 +35,8 @@ Template for new versions:
 ## Fixes
 - `gui/journal`: fix typo which caused the table of contents to always be regenerated even when not needed
 - `gui/mod-manager`: gracefully handle mods with missing or broken ``info.txt`` files
+- `gui/mod-manager`: gracefully handle vanilla mods with different versions from the user's preset
+- `gui/mod-manager`: now supports arena mode
 - `uniform-unstick`: resolve overlap with new buttons in 51.13
 
 ## Misc Improvements
diff --git a/gui/mod-manager.lua b/gui/mod-manager.lua
index 7e6b6efe7..12029661b 100644
--- a/gui/mod-manager.lua
+++ b/gui/mod-manager.lua
@@ -12,10 +12,27 @@ local widgets = require('gui.widgets')
 local presets_file = json.open("dfhack-config/mod-manager.json")
 local GLOBAL_KEY = 'mod-manager'
 
--- get_newregion_viewscreen and get_modlist_fields are declared as global functions
--- so external tools can call them to get the DF mod list
-function get_newregion_viewscreen()
+local function vanilla(dir)
+    return dir:startswith('data/vanilla')
+end
+
+-- get_moddable_viewscreen(), get_any_moddable_viewscreen() and get_modlist_fields are declared
+-- as global functions so external tools can call them to get the DF mod list
+function get_moddable_viewscreen(type)
+    local vs = nil
+    if type == 'region' then
+        vs = dfhack.gui.getViewscreenByType(df.viewscreen_new_regionst, 0)
+    elseif type == 'arena' then
+        vs = dfhack.gui.getViewscreenByType(df.viewscreen_new_arenast, 0)
+    end
+    return vs
+end
+
+function get_any_moddable_viewscreen()
     local vs = dfhack.gui.getViewscreenByType(df.viewscreen_new_regionst, 0)
+    if not vs then
+        vs = dfhack.gui.getViewscreenByType(df.viewscreen_new_arenast, 0)
+    end
     return vs
 end
 
@@ -55,21 +72,30 @@ function get_modlist_fields(kind, viewscreen)
     end
 end
 
+---@return boolean      # true if the mod entry was moved; false if the mod or mod version was not found.
+---@return string|nil   # loaded version - DISPLAYED_VERSION from the mod's info.txt
 local function move_mod_entry(viewscreen, to, from, mod_id, mod_version)
     local to_fields = get_modlist_fields(to, viewscreen)
     local from_fields = get_modlist_fields(from, viewscreen)
 
     local mod_index = nil
+    local loaded_version = nil
     for i, v in ipairs(from_fields.id) do
         local version = from_fields.numeric_version[i]
-        if v.value == mod_id and version == mod_version then
+        local src_dir = from_fields.src_dir[i]
+        local displayed_version = from_fields.displayed_version[i].value
+        -- assumes that vanilla mods will not have multiple possible indices.
+        if v.value == mod_id and (vanilla(src_dir) or version == mod_version) then
+            if version ~= mod_version then
+                loaded_version = displayed_version
+            end
             mod_index = i
             break
         end
     end
 
     if mod_index == nil then
-        return false
+        return false, nil
     end
 
     for k, v in pairs(to_fields) do
@@ -80,17 +106,21 @@ local function move_mod_entry(viewscreen, to, from, mod_id, mod_version)
         end
     end
 
-    for k, v in pairs(from_fields) do
+    for _, v in pairs(from_fields) do
         v:erase(mod_index)
     end
 
-    return true
+    return true, loaded_version
 end
 
+---@return boolean      # true if the mod entry was moved; false if the mod or mod version was not found.
+---@return string|nil   # loaded version - DISPLAYED_VERSION from the mod's info.txt
 local function enable_mod(viewscreen, mod_id, mod_version)
     return move_mod_entry(viewscreen, "object_load_order", "available", mod_id, mod_version)
 end
 
+---@return boolean      # true if the mod entry was moved; false if the mod or mod version was not found.
+---@return string|nil   # loaded version - DISPLAYED_VERSION from the mod's info.txt
 local function disable_mod(viewscreen, mod_id, mod_version)
     return move_mod_entry(viewscreen, "available", "object_load_order", mod_id, mod_version)
 end
@@ -105,6 +135,8 @@ local function get_active_modlist(viewscreen)
     return t
 end
 
+--- @return string[]
+--- @return { id: string, new: string }[]
 local function swap_modlist(viewscreen, modlist)
     local current = get_active_modlist(viewscreen)
     for _, v in ipairs(current) do
@@ -112,12 +144,16 @@ local function swap_modlist(viewscreen, modlist)
     end
 
     local failures = {}
+    local changed = {}
     for _, v in ipairs(modlist) do
-        if not enable_mod(viewscreen, v.id, v.version) then
+        local success, version = enable_mod(viewscreen, v.id, v.version)
+        if not success then
             table.insert(failures, v.id)
+        elseif version then
+            table.insert(changed, { id= v.id, new= version })
         end
     end
-    return failures
+    return failures, changed
 end
 
 --------------------
@@ -137,7 +173,7 @@ ModmanageMenu.ATTRS {
 }
 
 local function save_new_preset(preset_name)
-    local viewscreen = get_newregion_viewscreen()
+    local viewscreen = get_any_moddable_viewscreen()
     local modlist = get_active_modlist(viewscreen)
     table.insert(presets_file.data, { name = preset_name, modlist = modlist })
     presets_file:write()
@@ -157,27 +193,17 @@ local function overwrite_preset(idx)
         return
     end
 
-    local viewscreen = get_newregion_viewscreen()
+    local viewscreen = get_any_moddable_viewscreen()
     local modlist = get_active_modlist(viewscreen)
     presets_file.data[idx].modlist = modlist
     presets_file:write()
 end
 
-local function load_preset(idx, unset_default_on_failure)
-    if idx > #presets_file.data then
-        return
-    end
+local function prepare_warning(text, failed, changed, unset_default_on_failure)
+    if not failed and not changed then return end
 
-    local viewscreen = get_newregion_viewscreen()
-    local modlist = presets_file.data[idx].modlist
-    local failures = swap_modlist(viewscreen, modlist)
-
-    if #failures > 0 then
-        local text = {}
+    if failed then
         if unset_default_on_failure then
-            presets_file.data[idx].default = false
-            presets_file:write()
-
             table.insert(text, {
                 text='Failed to load some mods from your default preset.',
                 pen=COLOR_LIGHTRED,
@@ -193,10 +219,44 @@ local function load_preset(idx, unset_default_on_failure)
                 pen=COLOR_LIGHTRED,
             })
         end
+    end
+
+    if failed and changed then
         table.insert(text, NEWLINE)
-        table.insert(text, NEWLINE)
-        table.insert(text, 'Please re-create your preset with mods you currently have installed.')
-        table.insert(text, NEWLINE)
+    end
+
+    if changed then
+        table.insert(text, {
+            text='Some vanilla mods have been updated.',
+            pen=COLOR_LIGHTRED,
+        })
+    end
+    table.insert(text, NEWLINE)
+    table.insert(text, 'Please re-create your preset with mods you currently have installed.')
+    table.insert(text, NEWLINE)
+    table.insert(text, NEWLINE)
+end
+
+local function load_preset(idx, unset_default_on_failure)
+    if idx > #presets_file.data then
+        return
+    end
+
+    local viewscreen = get_any_moddable_viewscreen()
+    local modlist = presets_file.data[idx].modlist
+    local failures, changes = swap_modlist(viewscreen, modlist)
+    local text = {}
+
+    local failed = #failures > 0
+    local changed = #changes > 0
+
+    prepare_warning(text, failed, changed)
+    if failed and unset_default_on_failure then
+        presets_file.data[idx].default = false
+        presets_file:write()
+    end
+
+    if failed then
         table.insert(text, 'Here are the mods that failed to load:')
         table.insert(text, NEWLINE)
         table.insert(text, NEWLINE)
@@ -204,8 +264,25 @@ local function load_preset(idx, unset_default_on_failure)
             table.insert(text, ('- %s'):format(v))
             table.insert(text, NEWLINE)
         end
+    end
+
+    if failed and changed then
+        table.insert(text, NEWLINE) -- just to separate the sections
+    end
+
+    if changed then
+        table.insert(text, 'Here are the vanilla mods that have been updated:')
+        table.insert(text, NEWLINE)
+        table.insert(text, NEWLINE)
+        for _, v in ipairs(changes) do
+            table.insert(text, ('- %s to %s'):format(v.id, v.new))
+            table.insert(text, NEWLINE)
+        end
+    end
+
+    if failed or changed then
         dialogs.showMessage("Warning", text)
-end
+    end
 end
 
 local function find_preset_by_name(name)
@@ -573,7 +650,7 @@ ModmanageOverlay.ATTRS {
     desc = "Adds a link to the mod selection screen for accessing the mod manager.",
     default_pos = { x=5, y=-6 },
     version = 2,
-    viewscreens = { "new_region/Mods" },
+    viewscreens = { "new_region/Mods", "new_arena/Mods" },
     default_enabled=true,
 }
 
@@ -636,7 +713,7 @@ notification_timer_fn()
 local default_applied = false
 dfhack.onStateChange[GLOBAL_KEY] = function(sc)
     if sc == SC_VIEWSCREEN_CHANGED then
-        local vs = get_newregion_viewscreen()
+        local vs = get_any_moddable_viewscreen()
         if vs and not default_applied then
             default_applied = true
             for i, v in ipairs(presets_file.data) do