I don't generally support keep it closed until ready but for a commercial venture I would have to say that is a must. Though what they could have done is post a request for people who would be interested(from the total community) in helping out and giving them NDAs and access to the sources so that they could have fun with that.

Frankly desktop effects, web2.0, twitter(why do I always write this twatter first), social networking and other such "innovations" don't really cut it for me. Usability improvements, stability improvements however do