There are many feature differences between Odoo 14 and 15 that can be easily adjusted once you start using Odoo 15. It's understandable that businesses use Odoo, and then, after a year, a completely new version is released, forcing employees to change yet again. But that's the beauty of Odoo: it's always up to date and keeps its users up to date. Regardless of the changes, Odoo 15 will undoubtedly improve the experience of your employees and other users.