Vaadin 14 was recently released and is the next long-term support (LTS) version. It came with a bundle of new features which you can check out on the release page. One part of the added value is new web components and enhancements to existing components. Vaadin 14 includes 18 new components compared to Vaadin 10, which is the previous long-term supported version.
The new components are Accordion, App Layout, Check Box Group, Confirm Dialog, Context Menu, Cookie Consent, Custom Field, CRUD, Details, Email Field, Grid Pro, Login, Menu Bar, Number Field, Rich Text Editor, Select, Time Picker, and Tree Grid.
Also Grid, Text Field, Combo Box and Notification got new features.
You can check the examples for these, and the rest of the components, on the components page.