Sadly, it's not under active development right now, but I'm super-happy that people are still interested after this much of a hiatus!
Due to mostly financial reasons, I had to get a proper job as a project lead at a game company. It's a big responsibility and I have very little time and energy left for other projects, so I had to regretably put my indie life on hiatus.
However, this is all about to change! My contract is soon going to be up, and while this job was my chance to get into "proper" game development (with an actual budget and everything ;), it did not pan out as I'd hoped. This means I'm now parting ways with the company, so I will be free to pursue my own projects soon.
The plan right now is to get back to SlipWays as soon as possible - right after I pass my responsibilities at the job to new people and recharge my batteries a little, perhaps by doing a smaller project first.
The details are still in flux (the decision to quit is still fresh), but SlipWays PC is definitely the top of my priority list!