Got the PS4000 promotional email from ExactRail about half an hour ago. Photos of the pilot models were included in the email and are on the website. Ten roadnames to start. The cars now feature metal wheels, etched roofwalks and McHenry couplers. Details include the brake hardware and separate parts for the roof hatches. Couplers still truck-mounted. It appears that some enhancements were made to compare more favorably with the BLMA model.