Season 7 is set to launch tomorrow, Thursday 6th, but it appears that the iOS Store may have posted a promotional picture a day early:

The outfits seen in the middle and on the left seem consistent with the Season 7 teasers we’ve seen so far:
The outfit on the very right side of the image also appears to feature the much-anticipated ‘Onesie’ outfit:
We’ll update this post if any more details surface.