Canon has announced price increases for the following lenses. Effective July 25, 2011.

EF 8-15mm f/4L Fisheye USM lens $1499.00
EF 300mm f/2.8L IS II USM lens $7299.00
EF 400mm f/2.8L IS II USM lens $11.499.00
EF 500mm f/4L IS II USM lens $10.499.00
EF 600mm f/4L IS II USM lens $12.999.00
EF 800mm f/5.6L IS USM lens $13.999.00
This is probably a good sign we’re going to see the lenses shipping soon.