I am able to connect iOS client version 8.0.108 to Server Version 7.2.1.12. Is there something specific not working for you or is it totally broken?
It would be a really strange way to hose admins because most users update their apps automatically and if we didn't, or couldn't update our servers we'd be up a river.
I could understand if it was a whole new app, like from version 6 to 7, but one that auto updates would put me in a bind too so I'm interested to see how this pans out.