The Huawei Mate 20 Pro received a major software update in the beginning of December that addressed some minor issues and improved the Face Unlock and camera experience. Today’s update appears to be almost the same and it’s just as big – around 482MB.

The changelog says that the update should further optimize the Face Unlock in some scenarios – probably in poorly-lit environments – and also improves the camera experience. The Master AI mode should be more responsive and deliver more natural color reproduction.
Additionally, the patch should solve some problems with the camera app not launching in certain scenarios and squashes the bug with the preview of the photo. And, of course, last but not least, the security patch is bumped up to December 2018.
Thanks, DRtechno for the the tip.
 
GSMArena