Today, an upcoming low-end Windows Phone device with Microsoft branding got leaked on Chinese forums. This device named RM-1090 has passed certification of Ministry of Industry and Information Technology (MIIT) of the Chinese government.
During the re-branding announcement, Microsoft announced they will be sharing information about a new Lumia device soon. This could be the new Lumia device and by observing the design of it, I guess it could be the successor to Lumia 530.
It lacks camera button, but includes a front cam and I hope Microsoft has upgraded its RAM to 1 GB.
Check out more images below.