I'm just trying to highlight some of the lesser known documents that are coming out now that Windows 7 has been released - everyone else does a great job of covering the major downloads so I don't typically clutter up my blog with those type of announcements. This also is a good time killer when stuck in an airport lobby.
In particular, here is a good document explaining the changes related to 3G/EVDO/etc mobile broadband drivers with Windows 7:
Windows 7 mobile broadband drivers use the new features introduced by Network Driver Interface Specification (NDIS) 6.20. In Windows 7, mobile broadband devices integrate differently with Windows 7 than they did with Windows Vista® and Windows XP, when they appeared to the operating system Ethernet or dial up networking/modem devices. This paper discusses important changes in the mobile broadband drivers for Windows 7. This information applies for the Windows 7 operating system.