MMU prototype mentioned on atariage last year..

[exxos]

There was some huge spec of a up-comming (I think) MMU with the panther or something on AtariAge some months ago.. I saw it while generally looking though some posts.. but remember seeing it before.. but it said "blitter ii" and got me curious what was planned.. but I lost the page.. can anyone remember what page it was ?

EDIT:
http://www.atarimuseum.com/computers/16bits/est.html

Can only find that mention of it.. the MMU text was what I saw kinda of, but sure it was much longer spec sheet, and did mention "blitter ii" in the text.