Jeff M. (aka Jet Li), member of the YaBB and BoardMod teams, has just checked many of the YaBB mods available on BoardMod for compatibility with the just released YaBB 2.3.  Here is a list of mods that are currently compatible with Y2.3:

Who posted V1.1, Countdown Event V1.0, Reason for Editing V1.4, Topic Starter V1.3, Display Name History V2.1, External Boardlinks V1.1a,  YaBB Advertising V1.6, and Your Post Indicator V1.2.

Additional Y2.3 mod updates will be coming in the next few days and week.