Here I take you thru several features that are new to Knack's new database builder. There are others too, but these I really like. Here's a list, and following that is a link to a Knack article explaining others too.
● Automatic Image Resizing
● Filter Function with In-line Editing
● Field Descriptions
● Copy Record Rules
● App Design Section
● Search Object Field Function
Knack's article on new features: https://www.knack.com/whats-new