Windows Mobile 6 != Windows CE 6

Microsoft is once again attempting to clarify the difference between Windows Mobile and Windows CE. Sue Loh on the Windows CE Base Team blog states:

Windows Mobile 6 does NOT run the CE 6 OS. Technically the OS version # in WM6 is 5.02; it's an advancement of the OS (5.01) that was in WM5. Certain CE6 OS features have been ported to WM6. But the kernel VM architecture we've been discussing here does NOT apply to Windows Mobile 6.

(link)

WindowsCE vs. Windows Mobile

What is the difference between Windows CE and Windows Mobile-based Smartphone and Pocket PC software?

Windows CE is a customizable, embedded operating system for a variety of small-footprint devices. OEMs can use Windows CE to design platforms and customize applications to maximize the user experience for devices such as handhelds, thin clients, logic controllers, and advanced consumer electronics.

Windows Mobile is a complete software platform built on Windows CE. Unlike Windows CE, the Windows Mobile Smartphone and Pocket PC operating systems are specifically designed for devices that require a specialized hardware configuration. The software includes standardized interfaces and applications that ensure compatibility across hardware designs. For more information, visit the Windows Mobile Web site.

(link)

Mike Hall adds his two cents here with regards to the above as well as Windows XP Embedded.