The new update for effects provides several new features and a few fixes and optimizations. Similarly for MDrummer. Main improvements include even more advanced analysis engine, difference playback, parameter edits and indication for multiparameter bank modes, etc. For MDrummer it would be automatic signature change compensation, harmonic generator for oscillators, performance improvements, etc.
For effects, it is recommended to use the newest installer available from the download page.
10 Dec 2012 MeldaProduction updates MDrummer to v4.06
12 Sep 2012 MeldaProduction updates MDrummer to v4.04
19 Aug 2012 MeldaProduction updates all effects to v7.02
10 Aug 2012 MeldaProduction updates MDrummer to v4.03