Merger with MS does not Nokia is done with the Asha. In fact, Folks at evleaks have suggested that Nokia is on the way to release another Asha called 500, which was previously rumored as Orion. The phone will be released in 2013. The picture given below clearly shows it will have dual SIM like the rumored Lumia 720.
Of course, we do not know its specs, and judging by its name, Asha 500 will have identical specs as the Asha 501. However, we can make out that it will not have a hardware home key like the one found on 501. via. It will have a capacitive home button and Asha 500 specs will include a 3 inch display, 802.11g Wi-Fi and affordable price point.