Meadow b5.1 vs 1.0


According to Meadow v1.0 Roadmap it will be available this fall.
If I will buy Meadow board now with b5.1 will I be able to upgrade it to v1.0?
Is only software upgrade, or v1.0 is also new hardware and I should wait for it?

it should be just software base “or better to say FIRMWARE change”