As time goes by, I'm sure we'll hear a lot more about roll-your-own widgets.

For starters (only developers need apply), here's some info on FEWidgets.

If the Widget interface catches on for WM users in general, that will be a good thing for Omnia owners - although for many European Omnia owners, the widget interface v1.0 was the first thing they wanted to dump....

Samsung Omnia Style For Pocket pc | Simple Tips And Tutorials

[Nov 02] FEWidgets 1.0.0b4 (Widgets for Windows Mobile) - xda-developers

Jim Lewis

After a couple days with the omnia I have already turned off the widgets. While using spb mobile shell I have no need for the Today Widget screen.