PC is a one developer company, and Facer has taken a back seat to another project at the moment (I keep tabs via email from time to time).
The others have more themese because their thememaker programs were a bit simpler to get started and working with newer versions of the software. Facer's thememaker has not yet bene updated for F3. Dont know when that will happen though.
There is a theme for Facer via Leslie Franke (
Leslie Franke) that is pretty neat. I do not know if Leslie is doing another though.
3.1.1 was a maintence releasse for the datebook plugin. I have been banging my head against the wall trying to figure out how to make or enhance plugins, but I just cannot seem to get a hand on the programming side of things (and I design websites, aint that weird).