The above image has been posted by a Weibo user in China and it reveals two more new “Microsoft Lumias branded devices” marked with Red arrows. The marked phone on the top looks slightly bigger than the Lumia 535 models kept next to it and has different microphone position on the back. It bears Microsoft branding. You can see leaked Lumia 535 images here.
The second new phone which gets revealed also bears Microsoft branding and is at the bottom. It is quite big in size and compares well to the Lumia 1520 placed next to it. So, may be it is the next mid-range Lumia Phablet and may be the Lumia 1320 successor.