Sun has announced that its Sun SPOT technology (both software and hardware) are available under the GPLv2 open source license.

OpenSolaris Developer Preview 2 (formerly known as “Project Indiana”) is now available for download.

According to this article from News.com, Sun is challenging IBM for supercomputer supremacy with their new Constellation system. The new system from Sun is currently in operation at the University of Texas and is expected to perform at a level of 500 teraflops (500 trillion operations per second).

Sun has announced that it has reached an agreement to acquire Innotek, provider of the open-source virtualization product for the desktop called VirtualBox.

Ars Technica has a good article up with more details on Sun’s forthcoming “Rock” processor. The chip will have 16 cores (two threads per core) and run at 2.3Ghz with a power consumption of 250 watts.