▲ 5 ▼ Upcoming Go protobuf release

This is an announcement that we will be merging the dev branch of github.com/golang/protobuf into master on April 30th (approximately 3 months from now).

This merge will introduce several significant changes:

• A new table-driven implementation that is shown to be about 1.3x to 2.1x faster when tested inside Google.
• The preservation of unknown fields in proto3 messages.
• Validation that strings are valid UTF-8 as specified in the language guides.

When tested inside Google, we discovered that these changes were more disruptive than expected.