Canon is also preparing for an announcement next week (PowerShot SX150 HS and 310 HS)

In addition to Sony and Nikon, Canon is also preparing a new product announcement next week. No new DSLRs are expected. The two new cameras will be the PowerShot SX150 HS and 310 HS:

Here are some interesting Canon "leaks" from the past few weeks:

Canon.id listed the EOS 1Ds Mark IV model in their extended warranty section:

A recent duplicate 5D Mark II listing on Canon Australia website pointed to a folder called 6D: