meh it sounds like a mixture of the Apple model, with a versioning model to sound smart, that way they can brand it as a new version, but not really that great because it's a "middle version", so there's a lot of hype for "whole number" versions, like OpenAI milking what they can right now to create huge expectations for GPT-5, "if version 4.1 and 4.2 and 4.3 etc.... are this good, just imagine version 5!!!!"

then they keep raising money from investors in the meantime

Apple can't release a new phone every month due to logistics of a physical device, and people don't switch phones so quickly, so they just release a new whole number version every year (or a variant like iphone SE)