Final answer:
Continuous innovation is the category in which products share certain features with earlier products while incorporating new, added-value features.
Step-by-step explanation:
The category that matches the description of products sharing certain features with earlier products while incorporating new, added-value features is Continuous innovation. Continuous innovation refers to making improvements to existing products by adding new features or functionalities while maintaining the core value of the product. This type of innovation allows companies to stay competitive in the market and provide enhanced products to consumers. Examples of continuous innovation include smartphones that introduce new features with each model release and automobiles that incorporate advanced safety features without compromising their primary function as vehicles.