As a backer I have been keeping tabs on this project and it is looking really impressive so far. A colleague at work has also backed the game but at the level he got Alpha Access.
I have been jealously listening to all the fun he has been having during that process, but it does sound like the alpha was pretty high quality to start with and now we are approaching the Premium Beta release which will be adding more to the game as it nears final development.
The latest progress Diary can be seen here:
I'm really really looking forward to this, though I have realistic expectations on my ability to play this, i.e not very well
My pledge level will allow me access to the normal Beta test releases, so eventually I may be able to provide some first hand reports on how this beast of a game actually plays but I am expecting good things based on what I have seen and heard so far.