Well, 2.0 was actually referring to a modular cryptocurrency where existing features could be implemented without affecting the core blockchain.
You mean new features can be implemented without affecting the core?
If so please give an example.
It means on the fly updates, meaning no mandatory wallet updates are needed so mining & staking (when implemented) can still go ahead as normal while just the internal code is updated.
MiracleCoin Dev done it in the early days when he was around, all was fixed on the fly without needing Wallet updates, though in saying that the built in Arb-Bots needed to have a wallet update for them to be used.