Development continues on the 1.0 version of libusb. Join the mailing list to contribute to the development or just follow the discussions.
All development is done via CVS. You can find out more information from the sourceforge project CVS page
This branch is for the 0.1 tree. Which is stable.
You can check it out with the HEAD tag (which is the default) from CVS.
This branch is for the 1.0 tree. Which is development and not backwards API compatible.
You can check it out with the V1_0_DEVEL tag from CVS.
The project is hosted on sourceforge.net .