Just returned yesterday and did not see anything goin on in Japan. We walked through the pavillion and through the shops and didn't hear or see anything. Hopefully if someone knows they will let you know. Just wanted to tell you what I saw or didn't see.
Actually, they just finished some revamps on the mitsokoshi department store.
Also, sometimes people don't notice that there is a baseball/samari exhibit in the back part - that area didn't used to be open, and was originally planned for a ride through attraction.