Panasonic have added a replacement to their AG-HPX600 camera which is being phased out and the newer AG-HPX610 camera steps in. The Panasonic AG-HPX610 is going to be launched in October 2014 and the AG-HPX600 camera is going to be discontinued at the end of September 2014.
Panasonic are informing AG-HPX600 owners who need AVC ULTRA; with charge they are able to upgrade the AG-HPX600 to the AJ-PX800 from October 2014 to March 2015.
See Panasonic for more information.