You can withdraw cash by Mastercard from ATM of 7-eleven bank again in Japan.
Although, Maestrocard is still suspended even after 10th January 2014.
Anyway, there is no 7-eleven in Tango region so please make sure you have enough cash with you before you start traveling from big cities!!
For further information before I wrote about this, you can read from the following link.
http://seasidekyoto.blogspot.jp/2013/06/got-problem-to-withdraw-money-from-atm.html
P.S. I am a Maestro card holder which is issued by one of European bank so I will update information again, when my card started working again in ATM of Japan post bank.