Now you see what you've done. If those screencaps of mine end up being deleted, bacause of your complaining rant, I'm going to be very very angered. If that happens, I'll see to it that you're on my enemy list forever.
Ah, I get it now. I was wondering, since I haven't posted on Mecha Talk in a long time.
Kuruni submitted the Gundam Beast lineart there for addition to the MAHQ listings. It's a shame they haven't made a Gundam Beast section, as it's pretty good art, but I guess they're not keen on unofficial dojin mecha.
Anyway, the Gundam Beast books are available for purchase online. DLsite has the first four (Beast, Estruus, Lizards, and Kagerow), and they download as a PDF. The artists appear to be trying to move away from the Gundam name though, so they're listed as G*ndam Beast.
There's some newer books under the title of "G:Beast" that I've had a little more trouble getting my hands on. In particular, there's G: Beast Graphica (a collection of more artistic shots), G:Beast Versus (which has some new designs, like the panda-based Gothic Gundam), and G:Beast Fragments (a collection of material from the previous books).