The upcoming platform update is scheduled for Tuesday, December 23rd, 2014.
Bundler is updated to version 1.7.9.
Firefox is updated to version 34 which requires all projects using the selenium-webdriver gem to update it with bundle update selenium-webdriver.
Git is now on version 2.2.0.
libmysqlclient is updated to version 5.6.22.
PHP gets three version updates with 5.4.35, 5.5.19, 5.6.3.
Redis is now on version 2.8.18 which includes various new features and bugfixes.
New things
Go is now installed by default. The included version is 1.4, which among other things, adds support for Android applications.
Trying the new platform
You can evaluate the new platform right away by selecting Ubuntu 14.04 LTS v1412 (release candidate) from the Platform section of Project Settings. We encourage you to try it out, so that we can iron out any issues you may find along the way until the final release on next Tuesday.
A full list of changes is available in the platform changelog.