Tamron USA has begun teasing 4 new mirrorless lenses on their Fb web page.
There’s no point out of what the 4 lenses are as of but, or what mount(s) these lenses might be accessible for. I believe it’s nonetheless a bit early to see third celebration autofocus lenses for Canon’s RF mount from Tamron or SIGMA, however surprises do occur.
Tamron at the moment has 2 mirrorless lenses for Sony’s FE mount, so it’s probably these might be for Sony as properly. Judging by the teaser, it seems to be like a telephoto zoom lens and three prime lenses are coming.