AFR and MH2 cards are going in and under performers going out.
White: Slight change to try out more flexible cards.
Blue: Cutting under performers.
Black: Moving towards reanimate.
Red: Trying something new.
Green: Less 3 drops and more 4+5 drops and changing how ramp feels.
Multi colour: Swaping low picks out.
Colourless: Making the end curve more realistic to cast + reanimate target.
Testing mono colour creature lands.

Modern Horizon 2 additions and tunning the cube towards aggro being less great (was skewed towards being a bit to strong).
Emphasis on improving Izzet spell matters theme and Selesnya go-wide.

Starting to remove double shocklands and chaning borring manlands with more flexible option. Smaller upgrade to other cards.