What's the history of these motors, and is Mercury Racing still producing them (despite them not being listed on the website)?

I have a 1995 Mercury Racing catalog that shows a 2.5 liter available with the "Drag" midsection, but I found an article that indicates the "2.5 EFI Drag Race Outboard" was introduced in 2000.

I believe the motor was last available on Mercury Racing's website in 2005, but I've seen a video of one claimed to be a 2013 model. What is the deal with this? Is there a secret underground society of racers that has access to these motors... and can I join it?