Can't use new Warhammer 30K Mechanicum in 40K? Creative conversions may help. Plastic 30K Mechanicum units may work as alternatives for 40K Mechanicus with some effort. Using 30K Mechanicum in 40K ...

The Warhammer 40k Space Marine 2 Trygon update 7.0 patch notes are here, and there is truly far too much to read at once.