It's April 3rd, and it seems that this ended on April 2nd (which is unfortunate for those that didn't get to play).
I can't seem to find an update that caused it, and am thinking that it is server side.
However, if anyone still has a version of the app that they are able to catch pokemon on would they mind uploading the apk?
Edit: I've even uninstalled the apk from my phone, and done a fresh install from the play store with the latest version saying updated April 1st, but it seems to be that they've removed it from their end, I'm pretty pissed about that.