MS said that all Lumia phones will get the update. I wonder if other non Lumia WP's will get the update. Should I keep Samsung Ativ S or to buy a Lumia? Thanks
I am pretty sure that through preview all phones will get it.
Ativ SE would probably get the official update too, not sure about S.
Just like asking, will non nexus phones get android 5?
Nah we got Preview they don't
Not exactly.
Lollipop has the L Preview, and the nature of Android and vibrancy of its ROM scene means that even for older, or since dumped devices, you're bound to find a ported custom ROM of KitKat, or whatever in varying states of stability and completion. (many are experimental, others are fine for normal use, etc. ICS, JB, etc.)
Don't worry w10 will be for everyone (EXCEPT WP7, you cant be sure if people wont ask about it). The usual problem will be the carriers and the OEMs, but there is the Preview for Develpers.