This is release 3.0e. It looks quite nice.
The best part is the zlib-style "non-invasive" library interface.
A completely new version of libxdelta is on the way soon, based on the proposed-RFC VCDIFF encoding. The new version has a Zlib-style interface with no dependence on any particular I/O layer. Its very cool!
... but the SourceForge upload mechanism is still broken.
YES. See, there are recent CVS checkins to prove it. I expect to make a final 2.0 release of Xdelta in the next couple of months.
A complete rewrite of XDFS is nearly complete, and a new version of xProxy based upon it should be released soon. The code is in CVS.
There is a new code module in CVS named 'xdfssrv', which implements a user-level NFSv3 server using the Secure File System's (SFS) framework. It is about half-way complete. You can learn more about SFS at http://www.fs.net
Announcing the BETA release of Xdelta version 2. This release builds
on earlier functionality to provide a complete system for managing
delta-compressed storage and network transport. Using the Xdelta
system, you can easily incorporate this functionality into your
application. The system offers improvements over the use of RCS for
back-end delta-compressed storage, common in version control systems,
and also provides primitive support for delta-compressed transport in
a manner similar to CVSup. This release is accompanied by a technical
report describing the system and comparing it with RCS and GNU diff.