Acroding to a Newsletter, The new Twitter Shops give the merchant the ability to feature a larger catalog, which they can upload via a CSV file.
The file can contain up to 10,000 products, including their name, description, pricing and other details, allowing the merchant to easily rotate the selection of the 50 products showcased on their profile over time.
The new Twitter Shops feature is housed within Twitter’s Shopping Manager, an entry point where merchants can set up and manage the available shopping features. This Shopping Manager is now available to Twitter’s managed partners, the company notes.