What information does a Product Manager contribute during PI Planning?

According to the SAFe® Agile Product Management APM (6.0) documents and learning resources, the Product Manager is responsible for defining and communicating the product vision and roadmap to the Agile Release Train (ART) during PI Planning. The product vision describes the future state of the product and the value it will deliver to the customers and the enterprise. The roadmap outlines the features and enablers that will realize the vision over time. The Product Manager also presents the top 10 features for the upcoming Program Increment (PI) and their priorities based on the Weighted Shortest Job First (WSJF) method.

References:

Agile Product Management - Scaled Agile Framework

Product and Solution Management - Scaled Agile Framework

PI Planning - Scaled Agile Framework

WSJF - Scaled Agile Framework