DistroWatch notes that Rocks Cluster 4.1 (beta) is out the door. Rocks was one of several cluster computing Linux distributions that caught my eye while I was working on my research paper on open source clusters. According to the release announcement they have rolled BitTorrent in to the installer which should make for some amazingly fast compute node installations.
I always love to see progress being made in Linux-based clustering technology. Congrats to the Rocks team for getting this (beta) release out the door.