Update on POS from the dev (taken from the discord): I'm pumped!

"testing, testing and more testing. pretty sure Unitus will be the first multi AUX-PoW coin to add PoS. I can confirm at the point that the code IS working, but it still needs to be thoroughly tested - we don't want to break what we have. I remain hopeful that there still be a wallet released by end of June that contains the PoS code - but activation of PoS on the network may not occur until after that time. It is a hard fork as it significantly changes the consensus rules on the network - thus we must ensure a significant proportion of the network (miners, pools, exchanges, holders etc) has upgraded before PoS becomes active."