Has Autumn come early? Feb 8th 2012

This large oak tree, should be exhibiting healthy green leaves for this time of year, however, as you can see, the leaves are curled up, going brown, and taking shape of autumn folieage . Until this year, this tree, ( as all others around my section ) have been healthy and thriving,.............. not this year...!! alarming.....
Has Autumn come early? Feb 8th 2012