Inbox by Gmail
Bundles are a new feature within Inbox that expand upon categories by grouping emails into specific groups. For example, all purchase receipts and financial statements are grouped together so they can be easily found and navigated. Inbox can also group emails based on ways you specify.
Highlights is a feature that grabs the relevant information from emails and presents it in an easily readable manner. Google claims Inbox will even add additional information not explicitly stated in emails like package tracking status or flight times.