The date of that comic is 2014-4-28.

Go here:

https://xkcd.com/archive/

find "Google Announcement" and the hover text is the date it was put online.

See:

http://forums.xkcd.com/viewtopic.php?t=122505

I don't get it

It's an old comic and now they actually are shutting down Google+ under circumstances where folks are feeling like you can't trust them, they could shut down anything. They recently discontinued some email app too. People are feeling burned.

The comic is from a while ago and now looks prescient. It is 1361. The latest is 2056.

https://news.ycombinator.com/item?id=18169243

> Some email app

Do note that google inbox got presented as the next version of gmail. Personally I had expected gmail to get axed, not inbox.

It’s amazing how well xkcd is able to predict the future.

It's easy when you throw out a lot of "predictions". This is how the Simpsons do it as well.