Earlier Microsoft had announced GDR2 roll out to Lumia 735 and Lumia 830. Software update trackers have also been updated with GDR2 build 8.10.15148.160 roll-out info for these two Lumia devices.
You may like to read all the details about Windows Phone 8.1 update 2 aka GDR2 at our dedicated page.
Thanks Mike, Roku & many others for the tips. Cheers!!