We have released "RuffRuff Selling Periods," an app that makes it easy to run pre-announcements for new product launches and limited-time sales on Shopify.
RuffRuff Selling Periods is a selling period app that lets you set start and end dates for sales at the variant level. It is fully localized for Japanese and lets you set up new product launch announcements and limited-time sales with an easy 3-step setup.
It is also the first selling period app in Japan to use the Cart and Checkout Validation API, making it possible to prevent purchases of products outside their selling period in cases that existing apps cannot handle.