Where have you seen it? Simple. Brooklyn. This appears to be The Edge's new MIDI "System" Controller of choice, taking
the place of the Custom Audio Electronics/Bob Bradshaw controllers.
This in conjunction with the number of new (to him) guitars and effects that The Edge used for the recording of 2004's
'How To Dismantle An Atomic Bomb' and thus far for the promo shows.
I am sure that we will be hearing/learning more about this unit and it's capabilities once the guitar magazine interviews