The new Nehalem-based Xserves may launch in tandem with Mac OS X 10.5.7, investigation reveals. The evidence is said to lay within the most recent developer seed of v10.5.7, which contains an extension file called AppleTyMCEDriver. Inside is a machine identifier listed as "Xserve3,1;" the same identifier appears in a Nehalem-specific error message, which also mentions the most recent Mac Pro.

Critically, modern Xserves are listed only as "Xserve2,1" in Apple software, which suggests a new hardware revision. The v10.5.7 seed additionally makes reference to Marvell's Yukon 2 Ethernet controller, which cannot be found in the current Xserve generation. The timing of the two releases has also previously been projected to match up, occurring within the next two weeks or shortly thereafter.