Since we announced Windows Mobile 6 at 3GSM the most common question I get from customers and partners is how the product compares to Windows Mobile 5.0 and what the incremental capabilities are. 

The second most popular question is - what features require Exchange 2007.

The document attached to this blog posting outlines the comparison between Windows Mobile 5.0 and 6 and also show the features that require Exchange 2007 by placing an Exchange logo next to it.