See here for V 1.20 Highlights.
Features
Storefront
Content builder anywhere / Html components on different regions
Order status notification box
Discount tag with multilingual label
Order lines with display attribute for overriding style
Display order on promotions
New thank you page design (UI/UX)
New product page template (UI/UX)
Availability information from multiple warehouses
Net totals on minicart
Banners and promo content on catalog table view
Admin
Content builder anywhere
Content builder – new components (bento and accordion)
Enable / Disable sub brands navigation section
Enable / Disable categories navigation section
Order submission ux flow configurable - Redirect to order details page after submission
Sorting on brands via CMS or Commerce engine
Order email notification to user (optional)
Define display options (available options for storefront user) on catalog (category / brands / manufacturer)
New product template is available for the products
Dashboard - improve performance
System
Various performance updates for catalog and cart
Hotfixes
Minicart – Sum Quantities options
User activation password rules
Table view mobile filters
Pdf images
Clear media syncing queue
Release Notes
Minimum Commerce Engine Version 5.10.0.0