New TIE Fighter look?

Could there be a new TIE Fighter look in Star Wars 7? Yes there most likely will be. For one the stormtroopers got an upgrade. So what will the new fighters look like? In the teaser trailer there was a small scene will the falcon an 2 TIE Fighters. If you pause the video at a certain moment you can see the TIE Fighters look and it appears to be different. In the old trilogy the fighters had a small circular cockpit (were pilot sits) now it looks as if the cockpit is oval shape and has a different design to it. Also The glass or window in the front of the TIE looks like a new design also. Hopefully soon we can get another teaser trailer with some TIE Fighter action to really see if there is any change.