Looks nice. I only have two real gripes about the fz-15 as it stands and the new one doesn't address either one AFAICT.
1. It's not a true SLR, so in low light you can't see things in the finder.
2. It's impossible to get a good focus in very low light (eg night sky). This is related to #1. Either the thing to focus on is so dim that it won't even show up on the screen, or you find something that will (moon, bright star, planet) but it is too bright and bleeds between pixels. That means that you can't tell if the focus is right anyway. Either way, you can't focus; it's all luck.
I just wish that, even if they can't go to a proper SLR, they would have an infinity setting for the focus. If it was accurate (no reason it can't be - others do it with the manual stop on the focus range) then the problem would evaporate when shooting stars, and even landscapes if there is no need for foreground focus.
Just my .02