Nintendo is going to miss their previsions next quarter and the stock is going to drop more ( because of 3DS..).
The stock will stop dropping once they start making their numbers and isn't going to climb back to its highest point before a long long time ( if ever).
Right now I would say the stock is price where it should be and I woudn't expect any huge upswing ( it's going to drop more when they miss their next earnings but eventually it will go back around what it is now).