We have a new version for Raspbian for Robots that is now based on Raspbian Stretch.
You can take it out for a spin and tell us how it goes.
In order to keep bluetooth working, we have dropped support for the BrickPi+. If you have that robot, please stay with Jessie for a little while longer.
(this Beta will not have a working DI Update until we get out of Beta by next week)