Thanks to Richard from Pattern Music for letting me know about this. Looks like this is something that lots of people have been waiting for, and at last it has arrived, but not from Cycling ’74. Here’s what the developer’s site says.
c74 is an iPhone / iPod Touch app that let’s you connect your device with Cycling ’74’s Max/MSP 5.
In order to connect this app to Max please download the free external from : http://www.nr74.org/c74/c74.zip
Custom interfaces are built straight from within Max, presets can be stored etc. The external features some nice attributes for receiving accelerometer, GPS, compass, shake gesture and proximity data.
Communication between the apps does not rely on OpenSoundControl but in stead uses a straight forward communication socket, which offers a reliable connection.