Last week WooThemes released a free Plugin called WooTumblog and a matching iPhone app called Express (see our review of each here). This week they are inviting developers within the WordPress community to make their themes compatible with each, and will in turn feature them on the Express website.
On their future plans for the Plugin and iPhone app, WooThemes founder Adii Pienaar said:
It is our dream that the plugin would become a standard of sorts in the WP community for developing tumblog themes and because of that we actually spent time with Matt Mullenweg during development to standardize the custom taxonomy of the plugin (in a way that best fits into WP’s own development philosophies).
WooThemes has provided documentation on using the Plugin that developers can use.