V4.0.0-beta.3 : Welcome to the final beta of v4

As usual you should check the full bootstrap release note
And Bootstrap blog

Please note Bootstrap main breaking changes :

• Rewrote native and custom check controls
• Input groups were rewritten

Here is the Boosted specific release note :
** New components

• Tabs to accordions on mobile
• Priority navigation
• Desktop cards to full width link on mobile

** Fix and features

• Update to Tablesort 2.29 for security reason
• Refactor documentation homepage
• Improve keyboard accessibility on custom forms elements
• Fix hover/focus issue detected in beta.2