While the post doesn't reveal anything about the smartphone, it is quite probable the smartphone is the same RM-1090 handset as has been spotted in the recent past, earlier this week on Tenna, China's equivalent of the FCC, and last month on the US FCC.
The Tenaa listing of the RM-1090 showed an orange-coloured handset with Microsoft branding and logo printed on its rear panel. The logo placement is completely in-line with the branding plans the company had revealed last month when it confirmed it was dropping the Nokia name from its Lumia smartphones, a rebranding following the acquisition earlier this year of the Finnish group's handset division.
Microsoft will however keep the Nokia brand name for entry-level phones, such as the Nokia 130, under a license agreement between the companies. The Microsoft's acquisition of Nokia's devices and services division for more than $7.5 billion was completed in April.