Cayman announced

[EPIQTodd]

Here's my take:

1) Porsche has a taste for profit now, and they know that by offering a car that is cheaper to make than the already very profitable Boxster (cheaper because there is no convertible top, but all other parts are the same) but costs more, they will make more profit. Simple economics.
2) One would say 'whoa! Not so fast on the simple economics - why would people pay more for the hardtop version of the same car, Todd?' Porsche likely realizes that nobody is cross-shopping the two. Even with the 911, nobody goes in thinking they want a convertible and then switching to coupe - or at least VERY few. On this vehicle, you either want a tight, small coupe, or a ragtop. One costs X, the other X+$5k.
3) Porsche will be adding the same engines in the Boxster in 2007, which means the difference at that point is simply the top and the intake grill, pretty much. They will raise the price of the Boxster because then they can make more profit, and nobody has to speculate why there is such a price discrepency, because there won't be!