I’ve been staying more up-to-date with Solaris dev builds since they started publishing builds nigh-biweekly. That means I get to experience all the joyful brokenness of a system in development.  Build 128 introduced a problem with VNC which can be worked around by disabling the “tight” encoding (bugid 6906660). And Build 129 introduced a problem with filemerge fonts (bugid 6909040).  Both have pretty easy workarounds described in the bug descriptions.  The release notes for opensolaris are not widely redistributed, so if you’re using the dev repository from outside Sun, make sure you’re on the osol-announce@opensolaris.org mail alias.