Development Branch for the Hadoop Next Generation

[Marcos Ortiz]

I was reading the Hadoop Next Generation post on the YDN by Arun 
(http://developer.yahoo.com/blogs/hadoop/posts/2011/02/mapreduce-nextgen/), 
and
I was wondering if this development is public and where I can find the 
sources for this?
Regards and thanks a lot for reading

--
Marcos Luís Ortíz Valmaseda
 Software Engineer (UCI)
 http://marcosluis2186.posterous.com
 http://twitter.com/marcosluis2186