With the addition of Pittsburgh and Syracuse, the ACC will need to come up up with a new logo. Shouldn't be a big problem for now, but watch out if the ACC adds a non-east coast team or two.
Non-official update of the Atlantic Coast Conference logo. (effective 9/18/11) Subject to change without any notice.
I think the ACC can also add Penn State to the conference without messing up the ACC logo. Just add another point on the map.