IBM has released open blockchain with embedded Go scripting (github.com)

There is a little more information here: http://thenextweb.com/apps/2016/02/16/ibm-has-just-open-sour...

The over-arching collaborative project (hyperledger) seems to have multiple competing implementations: https://github.com/hyperledger/hyperledger

So it seems this is just one of them.