Hi +David Bowes
have played with 4.2.2 on the Nexus 7 and like the idea of multiple accounts, however would like to see more than one Admin/Owner on a device.
As for LDAP, as +Chris Taylor
says it's an enterprise feature and (if we ever get it) will allow us to loan out future Android devices in a class setting that they could all log in to uniquely.
Anyway, the new Nexus 7 looks nice, hopefully they will confirm Miracast support, and if the world goes Qi charging crazy (which I hope it does) we could start to integrate it into our furniture (charging desks anyone).
Not sure about Google cast, looks like the brains of a SmartTV on a stick!