I think the variety of online attention it received since it originally leaked on Reddit probably led to them announcing it. After that leak it was repeated by a variety of pretty mainstream websites. Pretty much impossible for one person to take credit for it, except the person who originally discovered the ALI YouTube page and downloaded all of the clips.
I’d be surprised if their original plan was to announce this today.
It was a very short blurb on their website with no details, and it seemed like they were just trying to get ahead of the leaks.
Very much seems like something they’d announce with more fanfare usually, like at Celebration 2027 (maybe the home media releases will be announced there?)
They haven’t announced Empire or Jedi yet either. Maybe those are planned for 2030 and 2033 in theaters? Hopefully we don’t have to wait that long for the home media releases…
If be shocked if they weren’t released in a boxed set. That’s the Star Wars home media MO