I looked around in the beta user guide and quickstart guide, but I did not found any information regarding the system requirements whether for iOS, Android or Windows Mobile.
From what we noticed with my colleagues, iOS 7 is not supported, which leaves out around 15-20% of iOS users.
On Android, considering the natural fragmentation of this ecosystem supporting only the latest version of the OS would be even more difficult to understand.
Is there any more info regarding this matter to be found somewhere?