I haven't seen any info on QRZ regarding the new HardRock-500. A kit prototype has been produced and information is available at https://sites.google.com/site/hobbypcbhardrock500/. I have a HardRock-50 that I put together from their kit and it has been excellent. The kit and antenna tuner looks to be competitively priced. I'd love to get one. I'd have to upgrade my antenna systems first to handle the extra power.