Probly the biggest software story of the show this, with Ableton and Serato creating a formal link between their two great pieces of software. The DJ can take control of the session by using the timecode vinyl to synt directly to Live. In fact inside Serato Scratch there is an Ableton button which reveals a smaller version of the live track view with clips, scenes and faders on display from the linked Live session.
This means the DJ or another performer can also trigger clips and control the session alongside the DJ while in perfect sync.
Also, the DJ can record their set into Live format - either in long or short form and then open the resulting file inside Live to tweak the mix, with individual decks as separate tracks and automation of the crossfader or EQ etc, assuming you use something like new Rane Sixty Eight controller for Scratch Live.
Not available just yet, but at the demo Huston and Nick were innundated with queries from eager DJs - a big hit methinks...