It would be great if we could have an option to mark products with a label to help website visitors understand status of goods and site owners manage inventory related issues. When a product is SOLD OUT give the option to MARK AS:

Temporarily out of stock -> SUB ACTION - Redirect to landing page: Get Alert, Join Newsletter, etc. IF TEMPORARILY SOLD OUT SELECTED, allow option to display TEXT over product image OUT OF STOCK - SEE ALTERNATIVES. 

SOLD OUT -> SUB ACTION - Identify alternative products to display in image carousel. IF SOLD OUT SELECTED, allow option to display TEXT over product image SOLD OUT. 

BUNDLE WITH -> SUB ACTION - Identify other products that go with the suggested product