Chris Randall of Audio Damage has announced Tattoo, a percussion synthesizer for Mac & PC:

With the caveat that the UI isn’t 100% finalized, here you go. Have a gander at Tattoo, our first instrument. Some salient points:

1. No samples. This is a drum synthesizer. Each voice is purpose-built, as well, rather than just having a general percussion synthesis voice.
2. Every synthesis control has a sequencer attached to it.
3. If you own Replicant, you can immediately see how the randomization/likelihood works for each channel/voice.
4. The sequencer also outputs MIDI (in the VST only, of course) so you can use the randomization features in other drum synths or external hardware.

So, there you have it. We haven’t decided on a price, and I have no idea whatsoever as to when it will be done. We’ve got the synthesis all in place, but not “tuned,” and the sequencer is about 80% complete, but the hardest parts haven’t been done yet.

It’s just a teaser, at this point, but it looks like an interesting mix of old-school drum synthesis and modern features.