Canon unveiled the new Canon PowerShot G11 in August. Apparently the $499.95 high-end pocket camera Canon G11 is in high demand on Amazon and inventory fluctuates.
The Canon G10 was already the favorite 2nd camera of professional photographers next to their DSLR camera. PhotographyBlog tested the Canon G11 and published this review.

Quote from the review: "The PowerShot G11 is the latest version of Canon's compact camera range for prosumers and professionals, offering a DSLR experience in a pocketable body. Interestingly Canon have reduced the number of megapixels on the G11 in a bid to improve image quality at higher ISO speeds, and they've responded to customer feedback by re-introducing the vari-angle LCD that was missing on the previous G10 model. With a price-tag of £569.00 / €659.00 / $499.99, the Canon PowerShot G11 is one of the most expensive digital compact cameras that money can buy - Gavin Stoker finds out if it's also one of the best."
Read the full review on PhotographyBlog.