Version 6.0k on the front page includes class options from the Mages of Strixhaven UA and the players' options and all monsters of CR 1/2 or less (and any other monsters on the same page) from Van Richten's Guide to Ravenloft.
Version 6.0l on the front page has everything from Van Richten's Guide to Ravenloft. I know they aren't putting alignment on monsters anymore, but I like it, so I put my best guesses on them.
I wasn't planning on updating it quite so soon, but version 6.0t (on the front page) has the races from the newest UA (Travelers of the Multiverse) plus everything from the Wild Beyond the Witchlight chapter 3 and all the monsters/NPC's in the appendices B and C with CR 1 or less.