After the big post launch patch last week (1.03), CD Projekt Red seems to have caught people unaware by releasing their next Witcher 3 patch today on the Memorial Day holiday. With so little time between the two patches, it also appears to have caught Steam by surprise too, because the patch notes are nowhere to be seen on the service even though the game is already updating itself with the new fixes.
GOG’s website is the only place to see the patch notes for the moment.
The biggest one seems to be the looping dialog bug, which I’ve experienced with a few different merchants in the game. The patch is up on GOG and according to my own account, also up on Steam as well.