From the images, it seems like a smaller scale exhibition with a more general display of the Gundam world. No previously undisclosed new product or information about any upcoming Gundam merchandise is to on display there.
The event will end this Wednesday (April 5th).
1/1 scale Gundam RX-78-2 bust display
1/1 scale Gundam pilot seat
Gundam Quiz
1/10 scale Gundam display
Gunpla dioramas
Images are from GToys Blog.
