Is there any other documentation about flexipages than the little info and tutorial in the Salesforce1 App Developer Guide ?
We find this quite limited and are very interested in exploring this area more.
Not so much looking for what flexipages are or how they can be uploaded/deployed into salesforce. Looking for a reference on the components possible, options, attributes of the xml content.. and so on.
update: It appears no true documentation is published at this time. Please do still post an answer when such documentation gets published.