As some of you may have guessed, ActivityPub and ActivityStreams 2 got deprioritized in pump.io core since it became politically less important and, as ever, we had a lot of pressing issues and high-impact features to focus on.

However I've spent some time hacking on this tonight (it ended up being far easier than I thought for various reasons) and there's a good chance that pump.io 5.1 will ship with support for content negotiating AS2 representations, which is a big first step.

So basically, whoohooo! \o/