See the help for the M4.

[X] Added ?, AM, AM2, Pixelate to mixmodes
[X] Ability to lock lfo's to oscillators to do FM and other effects
[X] LFO1 -> Voltage, mod cutoff (VCF)
[X] Opt. Built in distortion after filter
[X] Implement Playmode - Opt. Retrig envelopes, sync lfos 
[X] Add inertia on the filter. See Inertia in attributes
[X] Two new LFO waves, stepup and stepdn, good for arpeggiators
[X] Fixed Sync(!)
[X] Fixed Bug with LFO2 phase difference being the same as LFO1
[X] new waves
[X] new filters: 24 db bandpass, 24 db peak, 24 db hipass
[X] No more amplitude pops
[X] some other stuff