Hi,
Odoo 17 is expected to be release during Odoo Experience 2023 in this October.
Odoo 17 is expected to be released with UI/UX refactoring, glimpses of new ui is shared in public.

Source: https://twitter.com/M4ranth/status/1628357571173298176
Watch the full Odoo 17 User interface here: Odoo 17 User Interface
The other expected change is in the search view, it is expected to be more advanced.

Odoo PWA keeps moving forward with the addition of shortcuts, allowing quick access to several key apps of your Odoo instance.
See: Odoo PWA
Quickly select records using your keyboard and the SHIFT key support and quickly unselect in a single click.
Source: https://twitter.com/bouvyd/status/1614897465060200451
List and kanban column headers will remain visible even when scrolled for more data readability
"Create" button is renamed to "New" (Planned for 17, but it is backported to 16 also)
Odoo17 may allow adding products in sale order from catalog(kanban) view.

This is a good information
May I ask what will include the Community Edition?
will odoo 17 bring back the Grid variant entry in Point of Sales? odoo 15 have this feature, but odoo 16 doesn't