[G]atesphere is hard at work in creating a MSP430 library similar to the Arduino. Aptly called MSPhere( MSP – Here), he’s set on a mission to create a framework for interfacing low level hardware on the MSP430 micro-controllers. Later he also plans to write functions similar to the Arduino libraries. You can follow his progress on his forum thread or on his wiki. You can view his blog post here.
Also 43oh will tweet after the first release. And as always there is always the site RSS on the right sidebar.