I happened to be reading the Head-Fi DIY forum today for the first time in probably a month or more and came across a thread that pointed at Par-Metals site. The short of it is there appears to have been a semi-catestrophic fire at Par-Metals office/warehouse at the end of January which has currently halted all production of enclosures. I checked Antec's site (the one I actually care about) and they are very limited in what they have as of 2/4 but are saying that they'll be restocked in one to two months.
Anyway, just figured I'd give folks a heads up. I can work around the delay on for my project so it's no big deal.