Interesting. Vault 28 seems to have run its course, after trying very hard to be hipster since the late 2000's. A Fossil store can be found at any mall in Southern California, so no loss there.
And this means that the September closure of Build-A-Bear, Chapel Hats and RideMakerz across the walkway from Vault 28 and Fossil really is for "new dining" as Disney stated earlier this summer.
So a total of five stores are closing at Downtown Disney next month. To be replaced by Star Wars Laser Tag and unannounced future restaurants in 2018.