It’s here: Ubuntu 16.04.1 is now shipping on all of our products.
If you’re already on Ubuntu 16.04, you only need to run your normal Ubuntu updates to get 16.04.1.
If you are using Ubuntu 15.10 (Wily Werewolf), please upgrade soon. It reaches End of Life next Thursday on July 28 2016, after which it will no longer receive security and bug fixes.
Please follow these instructions to upgrade to Ubuntu 16.04.1: s76.co/dTZ0Me
*14.04 users have some time, but may also want to upgrade to 16.04.1