I have decided to wait.
I had a bad experience with an old Nikon (S10) during the week with a flat screen where all I could see outdoors was the reflection of my face even with a screen hood. Seems silly to rush to buy something only to regret later. My G11 has been repaired and I am now aware of it's low light limitations and understand the problem with ficussing in macro mode - it only works on wide angle!
If Canon dont eventually bring out a successor to the PS G12 I will go for the Nikon P7700 which looks almost as though it were Canon's successor to the G12 even to the articulated screen.