I heard there's a new outlet mall just outside Tokyo in Narita. Can anyone confirm this?
Yes, I've been there mate. It's brand new and just recently opened. They have many stores, you can google search for "Shisui Outlets". They are located outside of Narita (about 10 km from Narita airport toward Tokyo). There is a new interchange named "Shisui" and they are located near the interchange - very convenient.
It's an excellent outlet with all the usual stores including California Pizza Kitchen, Cold Stone and Garret's Popcorn too!
We went yesterday and we bought a lot of clothes from Gap for our children.
We used to go to the outlets in Ami city, but these Shisui outlets are closer for us.