Hey, so, it's been a while.
The short version is, Dash Blitz isn't my primary focus right now. It might be in the future. It's still an awesome game that I'm very proud of and I think you should play it. It even has a free demo and online (kind of).
Basically, Dash Blitz ran into a big graphical glitch in development that froze every single animation. The repair process for this has been long and painful, requiring every single animation to be reimported and reallocated before any new work can be done. This issue has to be fixed before anything new can be made, and is essentially a big timesink.
Of course I still want to finish Dash Blitz, but the reality is that I'm one man with a full-time job that's more important. I don't get much free dev-time as it is, so I need to be mindful of how I spend it.
The bottom line is I'm still making games, and Dash Blitz is still very much on the cards, but I'm focusing on smaller projects right now.
Just to reiterate - Dash Blitz is 100% my favourite game of all time, and I encourage you to play it too. I'll post an update here when v0.6 looks achievable, but think about that wait time before you put your money down.
If you want to see what else I'm up to you can always follow me on Twitter.