The Nokia Asha 306 was announced back in June and launched shortly after. It seems however, it still hasn't reached to China where it's just about to hit the market along with a surprising sibling... an unannounced Nokia Asha 309.
The differences between the Nokia Asha 306 and the new Asha 309 are subtle at best, but still they are obviously two different models. Our best guess is that these two are one and the same model on the inside, just targeted at different carriers.
These images appeared on the Chinese forums Baidu and were posted alongside images of the Chinese-bound Asha 306. The source claims both of these will launch tomorrow.Thanks for the tip, Fakhre.