Once Whistler bought the rights to the radios, it was pretty much a matter of time. GRE America tried to do the right thing and support the products when GRE just up and abandoned them, but with Whistler in the picture, the need disappeared.
Nobody has picked it up. It expired yesterday and there is a grace period. The Austrailian company referenced is the registrar that was used by GRE America. It is common practice to ransom an expired domain for late renewal fees or to offer it for sale. It should be released back to the available list within a few months to a few years depending on how certain they are they can make money off of it.