The funny thing in blockchain "industry" now that some people are even calling new projects using "blockchain 4.0",,, when to me in reality, Bitcoin was the blockchain "original" and maybe if we want to argue Ethereum is making the type of next 2.0 because of much more capabilities for smart contracts and cross-chain.
I do agree we still can consider it new though because adoption has not happened.
It's even funnier when you see that the 2.0, 4.0 etc. versions aren't even introducing anything new or innovative. It is all repetition of the old ideas dusted off and represented as new. The funny things don't end there either, in most cases the newer versions are weaker and with more problems. For example Ethereum 2.0 is going to switch to PoS and make it weaker while giving ultimate power and money making opportunity to the ethereum foundation and Vitalik so that they can get paid constantly for doing nothing, just because they hold the 72 million premined ETH.