Xenos Soundworks has released Synth1 Dubstep & DnB, a collection of 35 free dubstep presets Synth1 VSTi, a free synthesizer instrument.
Someone asked on the forum a few days ago if there were any dubstep banks out there for freeware synths and that inspired me to update my Synth1 and make these for you fellow wobble-heads out there.
Synth1 Dubstep & DnB is available for free download on KVR forum.
Version 1.12 is needed to use these as it makes use of the new effects and other added features. If you dont have Synth1 VSTi, you can download it here.