Windows 10 Mobile users can once again download a version of the official Facebook app that's been made specifically for that operating system. The app was briefly available to download a few weeks ago and was later removed.
For Windows 10 Mobile phones, the version number is 10.1, as it was when it appeared for its short time in the Windows Store in mid-November. There's no published change log for the app, but if you notice anything else that new or notable in this Windows 10 Mobile verison, please let us know in the comments.
Thanks to Cam Polson for the tip!