What we are likely to see, and I believe this article confirms it, is a Zune logo hardware program. If the OEMs hardware matches or exceeds the reference specs, then it can earn the Zune logo. Why else create a reference design? I'm sure one of the top issues governed by the Zune logo requirements is the phone's data port..they will want to be sure it can work with existing Zune Speaker/Docks.
Windows 7 - Gateway Laptop, Windows 7- Gateway Desktop - Dual 22" LCD
Windows 7 Media Center - HTPC homebrew, Dual Tuner
XBox 360, Zune 120 and Windows Home Server - HP MediaSmart (3 TB)