2010 - MR to Replace FRx Reporter as the reporting tool of choice for Dynamics AX. This will coincide with the release of AX2010 (6.0) and it will be called MR V2.
2012 - MR to be released as V3 with AX2012 (7.0) and will now include Forecaster.
2014 - MR to be released as V4 with AX2014 (8.0) and will include functionality from Enterprise Reporting.
Personally I would not move from FRx Reporter until 2012 having learned a very hard lesson over the last year or so with the current version of MR.