I thought we wouldn't know so soon, but apparently we are getting D&D 5.5e in 2024.
I heard about this on Reddit. The talk was included in the Future of DnD panel (around 08 hours and 10 minutes in). As the redditor mentioned, "They used the words "new evolution" and "new version", but not "new edition". They also confirmed that it's going to be backwards compatible with 5e.".
"New version", "backwards compatible"... Crawford mentions that the game "is always evolving" in the video, Winniger is talking about "new versions of the core rulebooks" with feedback on existing classes... etc.
Yeah, I'm betting on something like 5.5e.
This will coincide with the 50 year anniversary of D&D.
My opinion? Well, I'm a bit surprised, but not excited nor disappointed.
5e definitely needs a 5.5 version, because the new options in Tasha's and other books change some fundamental things about the game; so this is positive IMO. But I'm not really confident that they will improve the game a lot. Every change will have its fans and detractors, and making the game fundamentally simpler and more straightforward is basically impossible without alienating the (huge) fanbase that started playing with 5e.
They are probably not fixing weapons and armor, and I'm not sure they even fix the champion (although at the very least I expected the beastmaster ranger to be improved!). I'm betting they'll add more options and few rules changes.
I'll probably be playing with 5e, the SRD and some house rules regardless of what WotC does at this point.
Also, we are getting a new monster book, Mordenkainen Presents: Monsters of the Multiverse. I dunno, the Creature Codex is hard to beat. Well, we'll see.