A lot of things are being improved as we speak. We've got a Desktop bundled IDE in the works (Linux/Mac) and I've been working on some more advanced completion and language integration for C/C++, Java and .Net.
So expect this to evolve quickly over the next few weeks. And obviously now that it's open source anyone can help improve the project :)
What I couldn't find at first glance though is: what programming languages are supported by this IDE?