@Dincrest: The theme of XV is 'Bonds' and they said that the core of the story take itself quite seriously but there is still humor to keep things balanced.
That said, as someone who has followed Versus/XV for years I think you're reading too much into this considering that Kazushige Nojima is the writer for XV and he usually focuses more on the relationship of the characters more than anything else but we'll see once it comes out.
Also more info is assumed to be shared at TGS.
Eh. I'm excited about this FF but seeing how Nojima writes leaves me a little leery that the story will be about bromance and the adventure therein.