Two questions. First, any estimated date when the fourth volume will be released?
Depends on when I get it done. Sometime in 2002, most likely.
The second concerns the oaths of the Night Watch, Maesters, King's Guard, silent sisters, etc. Both Robb and Stannis, and presumably Robb's great lords, thought it was possible that Jon could be released form his oaths. Other than the precedent established by Joffrey with Ser Barristan, is there any other past precedent with any of the other organizations were the members swear poverty, celibacy, etc. to be honorably released from their vows? I ask because if the NW has been around for 8000 years, and many great lords and/or their families may have joined (not entirely willing in some cases), there seems to be a lot of potential for "exceptions" to develop as time went on.
Yes, there have been a few other cases, but they have been very rare. Such vows are taken very seriously.