Awesome.
Here's a link to the actual project: http://hpccsystems.com/
Here's a link to the actual project: http://hpccsystems.com/
Unfortunately, it looks like they decided to choose to license the code under the AGPL[1], so it will probably be of little use to most of us.
To say this another way: if you modify the core database source code, the goal is that you have to contribute those modifications back to the community.
Note however that it is NOT required that applications using mongo be published.