Just wanted to point to Ethereum, self titled "Next-Generation Generalized Smart Contract and Decentralized Application Platform".
Vitalik Buterin and Charles Hoskinson seem to be working on this. The website at
http://ethereum.org/ethereum.html is down for me, but here are 2 mirrors:
http://www.tuicool.com/articles/6BnUbuhttp://pastebin.com/NCGRv74uFundraising will be done in a Mastercoin-style way (1 'ether' -> 0.0001 BTC) and Ethereum will be running on it's own blockchain (like Protoshares).
An important part seems to be this:
As the media seems to be picking this up, I suppose its somewhat important to get in front of the Avalanche. I am indeed working on Ethereum in a leadership and development capacity alongside Vitalik and several others. We also have collected a fairly large initial set of volunteers, developers and curious investors in this prelaunch period. In short, in terms of community our goal is to be as open and transparent as possible and also use this event as an opportunity to build the first true DAC to manage the Ethereum project. In terms of the development process, we are really focusing on having a solid architecture and a good development methodology like SCRUM that will enable us to have both a systematic process alongside more effective bounties. In terms of the protocol and its inferred ecosystem, we have four basic principles:
- Simplicity
- Universality
- Modularity
- Non-discrimination
With this model, we feel that projects like colored coins and metacoins like mastercoin will have a much easier time building on top of Ethereum than Bitcoin. I think of your efforts like building HTTP. You need TCP/IP to have certain features to make HTTP work as promised. Similarly, Ethereum -> Colored Coins or Metacoins will work very well for your community. I look forward to the future and collaborating with you guys. Website, blog, wiki and fundraising up soon

And please join us down in Miami.
http://btcmiami.com/