The game is still great and seems to be worked on still by devs and programmers, as seen by both the last patch, and how quickly the few bugs in it were squashed.
The last patch also made the new max level of 20 give you a +50% permanent IP boost, and they have new login rewards where if you login for 5 concecutive days you get a +100% IP boost that lasts for 5 days. Theses stack so a win will get you 450 IP at max, which is quite nice. You also get 1-2 packs during the 5 days.
Lightmare has stated that Rebellion will get the cards designed first, and then the art done for them, which might be why it's running behind, so we're not sure when it'll be out.
In the last patch, alt art cards were introduced into the pool that people found out from rift runs. These were the alt arts that were originally slated for Foundation. My personal feeling on this is it's going to be an alt-art pack that will be sold in maybe in Plat, as Foundation itself couldn't be done in plat without all alt-art without devalueing the old cards. I think when foundation comes, it'll just be direct reprints of the cards with no alt art at all.
Finally many people have been complaining about lack of progress of the game in general, mainly because the last card set was 5 months ago and people are wishing for newness to liven things up again I believe.
Many think the game might be dying, but it's hard to tell from out here. My best guess on what has happened is that Poga left for whatever reason (new job, quit, fired, who knows?), and with Teremus then getting another job, the council had no real contact with lightmare, and weren't testing anything, so most of them got sick of it and tried selling their collections and bailing. Note that this is my best guess based on things I've read, I may well be right off the mark on this one, the council and teremus were forbidden to talk about anything about the issue so we have to guess. I'm guessing Ian is still around and he was one of the main card designers, so things might still be worked on as far as new sets go.
Otherwise, the game is still great fun, so enjoy it, and we'll see what happens. That's what I'm doing. I still greatly enjoy playing it, and will buy anything more they release. There's still lots of new players joining and enjoying this wonderful game. I'm personally playing it a bit less at the moment, but that's mainly because I've gotten a couple of other new games (Fallout 4 and SC 2) that take most of my gaming time at the moment.