An error in the Hong Kong Apple Store Online (still online at the time I publish this article) brings an image with a description that confirms the rumors of the launch of new models of Xserves with “Nehalem” processors, from Intel. I bet that with that, until next Tuesday at the most Apple will officially announce its new servers rack-mount 1U.
The supposed image, broken, named promo-ribbon-nehalem.jpg and has an alt = "" tag that says “Pre-order the new Xserve with Intel Xeon (Nehalem)”. MacMagazine recorded a screenshot for posterity:

The link itself is not yet activated and simply updates the site to the same page.
(Via: PC World.)