We got many questions regarding availability of Windows Phone 8.1 GDR2 update for different markets after Microsoft announced that a new GDR2 build is rolling out to Lumia 640, Lumia 735, Lumia 830 & Lumia 640 XL. Good news is that the software update trackers for Lumia devices have been updated with GDR2 build 8.10.15148.160 roll-out info for the above four devices.
It seems while Lumia 640 and Lumia 640 XL devices are getting the update in almost all the regions now, Lumia 830 and Lumia 735 have the update rolled out to only selected variants in European markets.
You may like to read all the details about Windows Phone 8.1 update 2 aka GDR2 at our dedicated page.