Update news about prebuilt protoc support for Bazel 7 and 8.

PiperOrigin-RevId: 858722076

Author: protobuf-github-bot

content/news/2026-01-16.md

@@ -8,16 +8,19 @@ type = "docs"
 
 ## Prebuilt proto compiler (protoc) for Bazel
 
-In an effort to speed up builds, Bazel 9 provides an option to skip re-compiling
-Protobuf tools and runtimes and use a pre-built protoc binary. Using a pre-built
-protoc also avoids build failures from incompatible or non-hermetic C++
-compilation toolchain installed on your machine.
-
-To use the prebuilt protoc, you must be using Bazel 9 or later, which itself
-requires protobuf version 33.4 or later. Set the
-`--@protobuf//bazel/toolchains:prefer_prebuilt_protoc` flag to use the prebuilt
-protoc. The default will be changed to use the prebuilt protoc with the breaking
-v34 release.
+In an effort to speed up builds, protobuf 33.4 offers an option to skip
+re-compiling Protobuf tools and runtimes and use a pre-built protoc binary,
+available to Bazel 7 and later. Using a pre-built protoc also avoids build
+failures from incompatible or non-hermetic C++ compilation toolchain installed
+on your machine.
+
+To use the prebuilt protoc, upgrade to protobuf version 33.4 or later, and set
+the `--incompatible_enable_proto_toolchain_resolution` and
+`--@protobuf//bazel/toolchains:prefer_prebuilt_protoc` flags. The first flag is
+set by default in Bazel 9 onwards.
+
+In the breaking v34 release, protobuf will change the default of
+`--@protobuf//bazel/toolchains:prefer_prebuilt_protoc` to true.
 
 ### Reasons not to use the prebuilt compiler