I think it is almost inevitable that one of the Kickstarter reward tiers will include Alpha access. However, it doesn't make sense to start that Kickstarter until they have enough that can really be shown off.

They have said they are hoping to have a playable demo by April (PAX East) so I think Late March is the earliest anyone can expect to get into the game. As hopefully they will get some outside testing before that demo hits the crowds. Then I predict the Kickstarter beginning shortly after, or coinciding with PAX, and Alpha a few months after that.

After all it has only been a few months since they announced the game, I do not think it is reasonable to expect everything done yet.