Anyone can implement the paper and then open source that - from the way the article is worded there might not be a stable/production ready version of Tango in the wild yet.
I also wrote some blog postings applying the idea to a bunch of different systems: http://blog.justinsb.com/blog/categories/cloudata/
Anyone can implement the paper and then open source that - from the way the article is worded there might not be a stable/production ready version of Tango in the wild yet.