Found a few more properties opening in January:

Home2 Suites by Hilton Changsha Ningxiang (31st January)
Home2 Suites by Hilton Sanmenxia Mianchi (31st January)

The Waldorf Astoria Seychelles Platte Island has changed its opening date and is now also opening on the 31st of January.

Hampton by Hilton London Old Street still just says Coming Soon without a date, but it shows availability from the 30th January