I don't think it's particularly weird that we don't yet know the 2026 slate. In fact, I thought it was always kind of weird that they would announce they were publishing a book in 9 months, but then not reveal the name of the book. The marketer in me believes it's better to wait until you have a complete story to tell.
As for adventure paths...there's a lot to unpack.
Overall, I found something to like about almost all of the 5E adventure paths. Even the unpopular ones. At the very least most of them had awesome Mike Schley cartography. But even I have to admit the last few years have been pretty bleak. Maybe all the effort was going into the new core books?
As for 5.5E...between the Starter Set and the two new Forgotten Realms books...not to mention Stranger Things and Dragon Delves...that's a LOT of adventure material. It's semi-traditional to launch a new edition with a dragon-themed adventure, a campaign setting, and a starter set. They did that, even if they switched up the approach in some novel ways. I don't think there was actually room in 2025 for an adventure path.
I hope they get back to high quality adventure paths in 2026. But even if they don't, I've got enough material to game with for the remainder of my natural life. And that's just for D&D!