Foundations and 221 new cards
New release contains 221 new cards, most from Foundations, but also includes new cards from DFT, DSK, DSC, MKC and other. New real life booster generations for old sets and improved target auto-choice by GUI. And of course it has many fixes for abilities and cards.
Full release notes:
https://github.com/magefree/mage/wiki/Release-1.4.55#release-1455v1-2024-11-30