Ringohan suggests that the tour goods will be something like:
Tshirt
Towel
Clear file (plastic folder)
Sticker
iPhone case
A stamp book (?)
Flag
Bag/purse
Shirt
Pants
Haori (formal Japanese coat)
I'm really, really excited to see these (especially the shirt-pants-haori, since I feel like they'll be a set) and my wallet hopes the designs are worth the money I'm ready to shell out for them. Ringohan also noted that there could (read: will be?) be more added.
I was really impressed with the scarves from Expo14 (so much that I bought one for my mother as well just so it would be within the family) so I'm hoping for similar levels of design that go beyond just your regular concert goods...