I think manufacturers are going to be pushing SATA drives soon and want to try to thin out the backlog of IDE's
Yeah, I recently built a hypothetical Dell system online for a friend in order to compare to building their own, and was suprised to see the default hard disk selection was an SATA drive. Plus, there was only a $50 difference to downgrade to the IDE drive which I think may have been smaller. So yeah, I think they're really pushing SATA. I like it a lot.
I was wondering, how do companies like Dell assemble their computers? Do humans put the cables in the right place? If they do, I imagine it would be nicer to connect thousands of SATA drives than IDE drives.