Odds are probably not. Once a series hits the S.A.V.E. line, a bluray re-release is pretty much out of the question. Depending on the show, sometimes the bluray gets put into S.A.V.E. as well, but lately more and more titles have been reduced to being DVD-only either in order to save costs, or due to licensing restrictions set upon them by the Japanese production companies.
At this point, I'm afraid the only way you're going to be able to get a hold of Baka & Test on bluray is to hunt down one of the out of print limited editions on Amazon or eBay. And those can go for a pretty penny. :hmm:
At least it's always in HD if you watch it online.