Alot of the update is focused on expanded features for the X1 and CDJ's. The good thing is that quite a few of the features also trickled down to generic MIDI support.
Traktor Bible users can download a PDF detailing the changes.
The download is available via the service center and the forum has been updated with the release notes.
New and improved features:
Traktor Kontrol X1 integration
Native zero-configuration support for Pioneer CDJ-2000 / CDJ-900 / CDJ-400 / MEP-7000
Native zero-configuration support for Denon DN-HC4500
New controller icon in header shows connected devices
Improved Setup Wizard with phono/line switch for Audio 4 DJ/Audio 8 DJ
Deck copy function in browser
Additional controller mapping functions
Enhanced pitch fader range control
Fixes:
Various fixes
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