The central example cited in that "Apple's MacBook Pro: Rotting Core?" opinion piece is totally flawed. The author starts by admitting that the Core 2 quad-core processors are not well suited to Apple's MacBook product line (because of its power requirements) but then he goes on to say the following:
The problem with that statement is that the only "mobile" Core i7 that became available six months ago was the
Clarksfield and that chip is principally designed for high-battery-consumption, desktop-replacement laptops (and in any case there is no i5 version of Clarksfield). However, the desktop version of the Core i5/i7s (Lynnfield) did ship last fall (witness the updated iMacs using the Core i5/i7 processor that were introduced in Oct./Nov. 2009).
In any case, the Core i7/i5/i3
Mobile chip family (Arranadale) have not yet shipped in any large quantity and were just officially announced by Intel in early Jan. 2010 (which by my count isn't "six months ago."). In fact, most of the major PC manufacturers are just now beginning to ship or announce notebooks based upon Arrandale (some are advertising availability either this week or next). Thus, Apple isn't late with Arrandale (yet) and the whole "rotting core" claim is completely specious.
The following Wikipedia article gives a complete breakout of the Core i7 product line (note the release dates and the Thermal Design Power -- TDP -- since anything over 35W is unlikely to be used in a MacBook):
http://en.wikipedia.org/wiki/Intel_Core_i7
and here is the wikipedia article on Arrandale
http://en.wikipedia.org/wiki/Arrandale
It is true, however, that you can get a similarly spec'd PC for considerably less money than a Mac. It's also true that you can get quad-core, Core i7 (Clarksfield) PC notebooks with relatively poor battery life. However, the latter aren't suitable for the thin and light MacBook Pros that have traditionally offered very good battery life. So, the Apple MacBook "core" isn't rotting, it's just getting very near to the end of its shelf life. It's pretty obvious that the author of that "Rotting Core" opinion piece is poorly informed (i.e. Clarksfield isn't main-stream mobile, there is no Clarksfield i5, and Arrandale was just announced two months ago).