Question [Q] How to know if a new official firmware is released

Hi,
I'm kind of lost right now, there's an update 14.2.A.1.136, that started rolling out in 30/01/2014, but until now my phone still on 14.2.A.0.290.
I just want to know if there's a way to test if an update is available in my country or not.

Second question is, if i root my phone, i can have the official updates ?