there is a change.
the best possibility to find out what the regulations for 2014 are is this:
http://www.fia.com/sites/default/files/ ... 111212.pdf
example: the new front wing width:
3.4.1 Bodywork width between the front and the rear wheel centre lines must not exceed 1400mm.
Bodywork width ahead of the front wheel centre line must not exceed 1650mm.
in the current rules, which you can find at the homepage from the FiA at Sports/Regulations, there is not this limit. I'm pretty sure you will find the other changes in the Regulations, too.
maybe it is a bit strange that they put the maximum width ahead of the front wheel centre line in the paragraph: "Width ahead of the rear wheel centre line"
edit: and don't you think it is a bit too early to speculate about the pecking order for 2014?