Pretty much everything works out the box on the new T480s AFAICT.
My problems are to do with the migration of for example my browser profiles!
Another problem is that https://wiki.archlinux.org/index.php/Hardware_video_acceleration doesn't appear to work:
Video Decode: Software only. Hardware acceleration disabled
OH I forgot to enable in about:flags! Why didn't that come over in the sync... ARGH