John Catalano (of Casa Blanca Works) informs me that Drive7 and DriveCD will no longer be offered for retail sale. He writes:
"We will certainly still maintain Drive7 and DriveCD in the OEM market, which have been doing great the past few years. In the next 3-4 weeks, we will send a free latest update to all the users who have been kind enough to support us with purchases and recent updates. This includes, at a minimum, owners of v4.0 and later, and may be extended back to owners of v3.62 and later. Tech support will be available for a couple of months, too."