Version: 5.6b (switch to 5.5)
Using the Automatic API Updater
Upgrading to Unity 5.5

Upgrading to Unity 5.6 beta

5.6 BETA DOCUMENTATION
This is first draft documentation for Unity 5.6, which is is currently in beta. As such, the information in this document may be subject to change before final release. Note that this guide is for a beta release and may not list all known upgrade issues.

See first draft documentation on Upgrading to Unity 5.6b.

For more information about what’s new in 5.6b and for more detailed upgrade notes, see the 5.6 Beta Release Notes
Using the Automatic API Updater
Upgrading to Unity 5.5