Lots of updates from Apple
Mac OS X 10.12.4 improves the stability, compatibility, and security of your Mac, and is recommended for all users. This update:
- Adds Night Shift for automatically shifting the colors in your display to the warmer end of the spectrum after dark.
- Adds Siri support for cricket scores 😄, schedules, and player rosters from the Indian Premier League and International Cricket Council.
- Adds Dictation support for Shanghainese.
- Improves right-to-left language support for the Touch Bar, toolbar, and visual tab picker in Safari.
- Resolves several PDF rendering and annotation issues in Preview.
- Improves the visibility of the subject line when using Conversation View in Mail.
- Fixes an issue that may prevent content from appearing in Mail messages.
- Adds support for more digital camera RAW formats.
Xcode 8.3 brings faster builds for large projects containing both Objective C and Swift. Siri support in iOS simulator. Xcode 8.3 no longer supports Swift 2.3 so you will need to update.
Also updates for Pages, Keynote and Numbers.