We're picking up the first batch on Thursday (there are 20 being made, and we're using them for development - we may auction a few with ultra-low serial numbers off at New Year to raise some money like we did with the Model B) to deliver to Pete for some tests and so forth. I hope I'll be able to get a picture of a small heap of them on Thursday to put on the blog.
I've explained here before, but it's worth repeating: the delay has been because to make Model As, we have to sacrifice Model B parts (namely the BCM2835, which at the moment has something like a 30-week lead time) - and when there's as big a backlog as there is at the moment, that's not something we want to do.
I'm hoping and expecting that all being well, we'll be able to start selling them pretty early on in 2013. I'm particularly interested in how they'll mesh with the camera board; and I think we'll be seeing them in a lot of industrial applications. We still recommend the Model B for schools and learning, because it's more flexible, but there are a lot of use cases that a Model A will be a better (and lower-power) fit for.
Director of Communications, Raspberry Pi