Without the flippy screen it's not worth it 'Techradar' seems to think so too with a non committal review.
If push came to shove I'd buy a G12 at the lower price but then it's not a lot different to my G11 which is working perfectly well since it's overhaul.
I was really hoping for something more radical The only major changes are a better lens and the loss of the screen which makes it a no go for me and I am not shelling out 500 quid just for the new lens, for my needs it's just not justified. I'd be replacing something OK with something mediocre!
Nikon just stole the Canon's thunder!