https://www.vice.com/en_us/article/epzgwn/jack-dorsey-fuck-it-were-doing-web5

Just when we were beginning to get a handle on Web3 and its self-referential attempts to popularize crypto-related projects, Block Head Jack Dorsey announced on Friday there was a new development: Web5. Web3? Pathetic. Simply embarrassing!

You may ask what happened to Web4, or even Web3 and why that project is apparently not adequate for Dorsey. Well, the project's website helpfully explains, Web5 is Web2 plus Web3.