An introductory tutorial on UnQL (the newest CouchDB, Sqlite unifier language)?

The CouchDB开发者_JAVA百科 and Sqlite founders , in collaboration with microsoft research recently announced a new querying language UnQL which promises to combine the two worlds of SQL and NoSQL After googling around for some time , I have given up on finding an introductory tutorial. Can somebody help with this ?

Probably the only resources about UnQL so far are several diagrams and syntax notes at the spec home. I think that there is still a lot of work on the details of the spec and it's implementation into the specific databases would take even more time, however it looks like a good move and starting point to standardize/unite querying mechanisms among NoSQL solutions.