Though Tracktion weren't on a booth this year, I bumped into head honcho Woody at one of the hotels, where I was passing through (not at the bar honest). He slipped me a USB key with this preview of the forthcoming Tracktion 6.
So here it is:
Selected new features
Unified, tagged search engine
Track tagging
Discreet automation tracks
One click rack side chaining
Live audio recording waveform overview
Record Punch mode
Elastique Pro time-stretching (world's best time stretch algorithm)
Tape 'start/stop' fade handles
Automation mapping on tempo changes
'Super Comping' - Create a swipe comp across multiple tracks for super quick editing
Step Clip enhancements including velocity
Tracktion is available for $59.99 as a digital download