Why Does Every AI Product Name Have a Decimal?

It does feel like each AI item is named something like a Model Name  v2.5 or an AI X v1.3 The decimal thing as a rule comes from these reasons:  

1. Versioning culture from software/dev world:

It's a long-time convention to form computer program like that, let's say "v1.0", "v2.1", etc. It gives a sense of movement and change over time without inferring a completely modern item.    

2. Inconspicuous promoting flex: A decimal overhaul says the latter  is superior than the former without requiring a showy title alter.
It's a way to show that development is continuous.   

 3. Dodges overhyping: Hopping from 1.0 to 2.0 sounds tremendous. But in case the alter is incremental, like a little show change or an overhaul in preparing information, they go for something like 1.1 or 1.2 to flag it's unused, but not groundbreaking.  

These are some of the reasons it appears that way.