For deejays using the Ipad together with Serato I know have free templates for TouchOSC and Osculator to use with Serato 2.1
Full support for the new feature set. Keep in mind it is only the first version but updates will follow soon.
To download these for free, join me on facebook! Just look up the page 'timo dawson' or click here: http://facebook.timodawson.com
Full tutorial available on the installation.