Yes, it is troubling to hear that at the press intro, when asked about shortcomings of the car, BMW responded by saying that a CSL was coming.
The possibility that the M3 was purposely diluted to "leave room" above it for a CSL is very disturbing.
The M3, IMHO, should be the best possible package M can put together. Performance and technology should not be held back in order to accomodate the CSL.
The CSL should be released AND DEVELOPED after the standard M3. The standard M3 should be the best that M can do now. The CSL, if it comes, should represent whatever incremental improvements M can develop one or two years hence, and should represent a no-expense spared approach to improving the standard car.