The State of Animated Gifs on the New Google+
Here is what I know, so far, and I believe this to be the full story as it exists, regarding animated gifs on Google+:
1) The mobile app (at least, Android) still autoplays most gifs, though it does require some large ones to be tapped to play... which will play inline, unlike on the web, where clicking to play will open the gif in a new page. I do not know the size limit involved. Edit: Connection Speed Also Seems to Play a Part
2) Some very small animated gifs will autoplay on the web. I am not sure how small they need to be, but the ones I've seen were low resolution and about the size of a thumbnail.
3) If you, the user, click or tap a Post on the web version anywhere in the white space, this will sometimes cause an embedded gif to play... and sometimes not. It appears to be, again, a function of the size of the gif, but I don't know the outer limit for size for it to start playing.
4) Animated gif thumbnails in embedded link previews will autoplay on the web, but not on the mobile app.Thoughts