I agree with Stan, if you need a small and compact camera, GET IT! I'm sure it won't disappoint. You'll regret it when they sell out... aren't they like in the $200-250 range? That's a crazy good price! (only thing that has personally been holding me back is lack of a hotshoe, because it is a very important feature for me and the fact that my old Canon P&S is still going strong after so many years and IQ is still good for such an old cam... but soon as it does bite the dust, it'll be hello to a new MX-1 for me!
)
So even if you
did wait and there was an MX-2 released, it would not be anywhere near that price by summer- it be more like $500+ and you can get TWO MX-1s + accessories and extras for that price. Plus, I can't see how they could offer massive improvements... probably won't have any super amazing new features, maybe a a couple more MPs or something...