People can use it by tweaking a file embedded in Facebook for i Phone.
According to Mashable the preview are look like these photos...
But wait!!!!something went wrong looks like Facebook got a hint of it's hacked app so they are rolling back their support for it.According to the Techcrunch people are getting turned away from their very log in page .
So,no donuts for them.But lets hope that this will boost up their relies of the app..