“Sad Panda” as Paul refers to it. Presto won’t make it to F11. It’s sad because it saves a lot of time and bandwidth since it only downloads the change in the packages and not the entire package.

More info from Paul’s post here :: http://paul.frields.org/?p=1611

How does Presto work? Yes, good question.. The following articles should solve most of your queries. For more, please ask🙂

https://fedorahosted.org/presto/
http://lwn.net/Articles/329484/
https://fedoraproject.org/wiki/Features/Presto