We are working on the first edition of The Master List to be out on the 29th October. Till then you can check out the store promos already available in The Master List website (click image to go there).
Every month new stores and new promotions. If you are a designer you can apply whenever you want. There is no theme or obligation on creating something new. You can use the things you already have created to promote your store. For more informations please visit the official website (click image above to go there).