We upgraded to 2015.1.2 this night , without errors.
All sounds good ! except Service Requets with some strange jobs.
First , a approval ("Approval for Tablet Request" - is it yours? because it's not mine) is now on every Requests. We didn't use approval on these Requests before.
Secondly, Stranges tasks totally different of the request are done , on the request.
I'm looking for Release notes on 2015.1.2 , to check new devices on this release.