A new hand controller is DEFINITELY coming out, but time frame is unknown; by me anyway
I know that this is a top priority for AEM and the search is world wide. They have found a few new h/c, that are compatible with the ecu firmware. You need to understand, alot of time and money was taken into writing firmware for the ecu to work with the original h/c, so they need to find a replacement with the same logic/chipset. The ones they have found are good but have their own set-backs/limitations: some are too bulky, too small, no graphic display, limited interface, etc. Unfortunately it may take a little more time to find something close or better and get the manufacturer to complete minor changes, so that it works 100% with the ecu and all it's features.