The Nokia Lumia 625, a phone we first brought to your attention back in May, is now official and as we told you back then, it offers a 4.7 inch screen; that makes it the largest screened Windows Phone 8 model in these pre GDR 3 days. Once that update goes through, OEMs will be able to build Windows Phone flavored models carrying 5 inch (and larger screens) with 1080 x 1920 resolution, and powered by a quad-core processor...
Source: http://www.phonearena.com/news/Nokia-Lumia-625-now-official-device-carries-largest-Windows-Phone-8-screen_id45603
Source: http://www.phonearena.com/news/Nokia-Lumia-625-now-official-device-carries-largest-Windows-Phone-8-screen_id45603