Exciting, of course. You can run Devcoin Core 22.x if you compile and run on Linux! We're past block 516000 and that is the block for SegWit activation. We need more nodes. So far the majority run Devcoin Core 22.x (5 peers and 29.4% or so of todays Devcoiners on the network - but I think we need more. @develCuy would know how many - I am unsure).
We need the majority of Devcoin network to support Segwit, including miners. Since those two conditions aren't met yet, all core 22.x nodes need to be updated with a later node in order to let them keep syncing with old nodes (that are still the majority).
Since the initial period of 3months-ish didn't work, I will double it to 6 months.
- develCuy