Made by the same M3 team, it's a sister-flashcart. I think the firmwares are somewhat compatible between the M3i and the iTouch, not 100% sure. You'll have a hard time finding them any more though.
The iTouch is made by the M3 team. It has the same compatibility as the Touchpod/Sakura and uses the same cheat system as it. So it's not really a clone, just a another project of the M3 Team. Side Note: Also the iTouch firmware used to be able to run on M3 Real/ M3i Zero, till the M3 Team locked it out.
None the M3 cards have not be updated in quite some time. The M3 Team has been doing this random vanishing act as of recent months.
