These are the places I look to catch up on the latest in the museum and gallery guides.
A comprehensive list of museums and galleries in Japan
Other places I regularly visit are:-
Pecha Kucha is a presentation night with about 10 presenters showing 20 slides each for 20 seconds. Most subjects are about the design, art, architecture world. This event takes place on the last Wednesday of the month.
Pausetalk – illustrators, photographers, journalists, designers, writers etc meet up on the first Monday of every month in Ikebukuro.
Amazing blogs on Asian art