I think, though I may be mistaken, that this was referring to the fact that Intel keeps changing their socket specs with each new processor. The life of the P3 was relatively short and the socket of the P4 is incompatible with that of the P3. Expectations are that Intel will either change the socket again before the end of the P4's life (about a year and a half, I expect) like they have done with the "latest and greatest" or they will just change to a new processor very soon. And, might I add, the P4 IS about to have a new brother (from most reports). Intel is supposedly working on another chip or two. Though I do not think the other chip(s) is meant for the consumer level market (a workstation or server chip). Basically, things are in such tumult right now that chipsets, sockets, RAM and processors are changing almost overnight it seems.
Charles