Like it says. Hotel reservations for SIGGRAPH 2023 are now open: https://s2023.siggraph.org/travel-accommodations/ – from what I see, you can cancel cost-free up to the end of July. So, if there’s any chance you’ll go, lock it in now. To save you a click, SIGGRAPH is August 6-10 in Los Angeles.
It’s SIGGRAPH’s 50th year, so I expect a fair bit of retrospective stuff. In fact, the Electronic Theater is accepting such material until May 1st, so if you’re of an age, dust off those VCR tapes for submission.