That’s right, whilst there is no official release data for Windows Mobile 6.5 yet, you can go and download the Windows Mobile 6.5 Developer Tool Kit today. Probably the largest component of which are the emulators. If you haven’t had the opportunity to look at/play with a 6.5 device yet the emulators are a great way to become familiar with the new UI and how the gestures work.
Update: Jorge has a great post on building a simple widget on the Windows Mobile blog.