the interesting thing about the cayman is that aesthetically it is a boxster hardtop, but athletically (mechanically, if you will) it's a 911. i don't recall off hand what percentage of its components are "shared" (in porsche lingo) with the 911, but it is significantly greater than those components "shared" with the boxster.
if the threads floating around here are correct, though, about a 3.4 l version of the 987S for 07, then i could see cayman values for those currently on the road taking a major dump. it seems pretty obvious - so much so, that i'd be baffled that porsche would make that oversight (ford, sure, porsche, not so sure!)
maybe the thing to keep in mind is that, unlike other car manufacturers who use the same platform for a bunch of their cars (and trucks) and recycle engines because of a slightly more zombie-like consumer, etc, porsche may really count on the fact that it's target consumer is highly attuned to both the physical and mechanical subtities that separate each model. thus, even a 3.4 boxster with its boxster appearance and componentry will be an altogether different beast from a 3.4 hardhat wearing pseudo-twin. in my world i'd call them fraternal twins!
on the other hand, if the value of the cayman plummets, some of us may have to really decide if we like girls who bear all and go topless at a moment's notice or girls who like to keep the package wrapped
