Please don't shoot me 
I too reacted the same way when I read the topic title.Infact,being an optimistic blockchain supporter,I didn't even bother to open the article until the geek inside me pushed me to.Anyway,I was surprised.I mean we should embrace the changes right ? Here ya go,welcome HashGraph.
https://cryptoanswers.net/goodbye-blockchain-hello-hashgraph/
For the lazy heads
I too reacted the same way when I read the topic title.Infact,being an optimistic blockchain supporter,I didn't even bother to open the article until the geek inside me pushed me to.Anyway,I was surprised.I mean we should embrace the changes right ? Here ya go,welcome HashGraph.https://cryptoanswers.net/goodbye-blockchain-hello-hashgraph/
For the lazy heads
Quote
The new consensus algorithm
Introducing Hashgraph a fair and fast, byzantine fault tolerant consensus algorithm. According to the founding Hashgraph team consisting of computer science and cybersecurity pioneers Dr. Leemon Baird and Mance Harmon, the hashgraph consensus method achieves the following notable feats:
Its fast: 250,000+ transactions per second and limited only by a users bandwidth (Pre-Sharding)
Its fair: mathematically proven fairness (via Consensus Time Stamping)
Its secure: bank-grade security (Asynchronous Byzantine Fault Tolerant)
Why is Hashgraph superior to Blockchain?
[read the actual article to know more]
Introducing Hashgraph a fair and fast, byzantine fault tolerant consensus algorithm. According to the founding Hashgraph team consisting of computer science and cybersecurity pioneers Dr. Leemon Baird and Mance Harmon, the hashgraph consensus method achieves the following notable feats:
Its fast: 250,000+ transactions per second and limited only by a users bandwidth (Pre-Sharding)
Its fair: mathematically proven fairness (via Consensus Time Stamping)
Its secure: bank-grade security (Asynchronous Byzantine Fault Tolerant)
Why is Hashgraph superior to Blockchain?
[read the actual article to know more]
In any case, in a few years we will see a modified blockchain technology that will constantly change and progress. Everything around is changing very quickly. Even now we are dealing not with pristine technology, which confirms the change or appearance of new technologies.
I think this is the issue with BitCoin, since its code will always be based on the same PoW concept, it has little room for innovation. Indeed blockchain will innovate a lot in the next decade, and coins must adapt.