Michael Prager of BoardMod (YaBB's modding & theme community) announced today the release of BoardMod 2.5.6!  Today's release includes better support and bug fixes.  Here is Michael's announcement:

Just in time with the new YaBB 2.2 we present a new BoardMod version: 2.5.6. It now comes with initial support for YaBB 2.1 and 2.2. Furthermore all outstanding bugs have been closed for this release. See below for a complete list of changes. An update is very easy, just run the installer.

DOWNLOAD:

http://www.boardmod.org/downloads.php#2.5.6
 
WHAT'S NEW:

• added support for YaBB 2.1 and 2.2
  
• YaME 1.0.4: fixed .mod file association problem (Bug No. 1481232)
  
• improved .cgi Support, properly find AdminIndex.cgi and friends (Bug No. 1362113)