I´ve heard about that BB is being converted to the IMAX format. So my question is: Are there any IMAX-ish sequences on the BlueRay of Batman Begins? Cause I think I heard that they started using the IMAX camera on TDK.

What do you mean by IMAX-ish?
There is no aspect ratio change like TDK and TDKR.

Okay, I ment that those black bars at the top and the bottom of the picture disappear. I think we both mean the same, but if there is no such thing, thank you sir for the answer.

There will be NO ratio change on the BB Blu-ray. It will not go from full screen to letterbox (with the bars on top and bottom).