OSC is still alive as a useful protocol for devices and applications to talk to each other, and especially so with TouchOSC. However, unlike your standard MIDI device it has always been somewhat intimidating. In Modul8 you use the OSC module and then you have to fiddle around with the network settings a bit to get things working. Not nearly as easy as plugging in your MIDI device, enabling MIDI mapping and jiggling a slider or knob.
It is nearly that easy now because TouchOSC recently added MIDI. You might call this a downgrade (or a side grade? and whatever happened to HD MIDI anyway?) but it does not hurt to just add a good old protocol when it can be done through some extra, tried and true lines of code? And made even more helpful with the implementation of CoreMIDI in iOS.
At the top of this post the MIDI Thief provides a basic tutorial for connecting your iPad, iPhone or iPodTouch to Modul8 with the CoreMIDI providing you with feedback.
For those of you who are connected to our Facebook page, may have seen the post by VJ Lupin who is working on a very special layout.

It uses specially modified versions of the BPM module and the OSC module to provide more feedback options such as clip playback position and BPM speed data. Be forewarned that this is not yet available publicly, but the tutorial above will get you going with the basics.
Personally, I have not really taken to using the iPad for performance. I still prefer a physical knob and slider. Where I have found the iPad useful has been when I need a really specific setup AND I need to be away from the computer. One example is doing presentations for Modul8 when I don’t want to be standing near the computer. Most recent was when I created an installation and needed to move around the space taking video of the installation from various angles. It came in handy to really quickly create a basic control for resetting the video without having to go all the way back to the computer.
For the full information on the requirements for what you need in to make this tutorial work for you check out the page of the video.