Hardware wallet question.

Ik you guys have probably been asked this a million times, but what happens to ethereum someone’s owns on a hardware wallet once 2.0 comes out. I read that it stays the same? But I don’t understand how. Are they different or are they the same? Also, when 2.0 comes out will fees drop a lot, or get worse? I really appreciate your time giving any answers for me here. Thanks 😊