A lot has been going on with the revelations Games Workshop has been feeding us on the new edition of 40k. However, Reese has a great commentary here about the new edition.
Reese and Frankie over on Frontline Gaming... Commenting on the New Edition
sent in by a reader regarding Tau
About half way through he mentions that the Tau 'Fly' rule that we heard
about early lets them not only fall back and fire their weapons as normal,
but also that you can move over units while you do so...so no surrounding
crisis suits to stop fallback it sounds like.