Hey, I got curious and decided to take a look at how things are going.

Currently, there's a big meta issue on Bugzilla (1907090) with dozens of sub-issues tracking development of tab grouping on desktop, and they're actively being worked on right now. Seems like there's simply a lot of work to be done, especially of the invisible sort, before we get the feature proper. But things are progressing nonetheless!

So I'd say there's no need to join the crowd asking that on every other announcement... but that's just what I think. Hopefully this was helpful :^)