Japan Rail Pass can be used for Hayabusa (Revised on Feb 2, 10)

The newest train on Tohoku Shikansen E5 series (C) sukhoi37
The newest train on Tohoku Shikansen E5 series (C) sukhoi37

Since I have received a response about the extra charge on Green Pass from my reader, I noticed I gave the wrong information. I apologize and revise the informations.

I just received the notice from JR East. I am very happy to confirm that Japan Rail Pass will be able to used for Hayabusa.

Details and conditions

Ordinary Class
Both Japan Rail Pass Ordinary and Green can be used. No extra charge.

Green Class
Japan Rail Pass Green can be used with no extra charge.

Gran Class
Japan Rail Pass cover only the basic fare. If you want to take this class, you have to pay both Limited Express surcharge and Gran Class charge. As of Feb, 2011, the extra charges on Japan Rail Pass are the following:

Tokyo to Sendai : Ltd Exp charge 4,810 yen / Gran Class surcharge 9,000 yen (If you upgrade from Green, surcharge is 4,000 yen Even Green Pass cover only the basic fare.)
Tokyo to Morioka : Ltd Exp charge 5,650 yen / Gran Class surcharge 9,000 yen (If you upgrade from Green, surcharge is 4,000 yen Even Green Pass cover only the basic fare.)
Tokyo to Shin-Aomori : Ltd Exp charge 6.500 yen / Gran Class surcharge 10,000 yen (If you upgrade from Green, surcharge is 5,000 yen Even Green Pass cover only the basic fare.)

If you are looking for the details about Hayabusa, please refer this page. If you are looking for the timetable of Hayabusa, please refer this page.