So far, the only official word is " will challenge conventional expectations of mid-cycle model change".
So that would mean quite a bit more than the usual "new headlights and bumpers".
(It is also what is being said about the 2015 Jetta and 2016 Passat)
Being a mid-cycle refresh, the profile won't change much.
But we could be seeing a whole new front, rear and interior. And maybe new engines? (2.0 Liter Turbo?)
No matter what, the Camry is still the best selling car in the US, so Toyota won't be going nuts with crazy styling.
What would you like to see in the 2015 Camry?