I have heard others say terms such as "industry 4.0", "agtech 5.0", etc. My reaction is the usual WTF!
It is no longer "cool" to say anything after v2.0. It is not about the version number but rather a differentiator. After v2.0, you are just forcing it and it is something like people who keep talking about what great things they did in the past while distancing themselves from the present.
Here is something, HTML stopped versioning after v5.0, and I love that. It is just plain HTML for all of us (even if the specifications have internal versions).
So, no, anything after v2.0 is just cheesy.
I was lucky to be amongst those developers who participated in spearheading the Web 2.0 thingy. I developed a whole lot of Rich Internet Applications (RIA) powered by the Flash Player, and then went on to do a whole lot of Ajax, Web 2.0 without it too.