Sorry anons but Let's Go Too is definitely happening.
>2 years since the last one
>no major Pokemon release announced so far this year in an annual franchise
>Crown Tundra will be out in early Fall giving it enough distance from a November release
>seen by Nintendo as targeting a different audience than a real game like the 4th gen remakes would
>Pokemon GO is still going strong and has been doing a lot of revamping this year
>Poke Ball Plus stock has been clearanced at all major stores as of a few days ago hinting at the release of a new model (most likely including Celebi)
Aside from all that, the plushes are as big a hint as they could give. It's very likely they filmed the Let's Go announcement at the same time, so the Johto plushes and previous Let's Go games would make an appropriate backdrop.
It's also very likely that the next big Pokemon announcement is going to be a part of the next Nintendo Direct rather than its own thing like this was. This would also explain the splitting up of the announcements, as a Nintendo Direct would have enough content in it already that all the announcements today would seem out of place/get glossed over (outside of Pokemon Snap).