Nope, it went to 10.6.
8, which came out two years after its initial release. Which is exactly the point. Instead of releasing a new OS every year, they took the time they needed (a full two years) to refine it and get it right. And get it right they did.
The difference with Snow Leopard is not, as you imply, that they needed more tries to get it right. Rather, it's that it seems Apple
always needs at least that amount of time (& number of tries) to fully refine a new OS, but with Snow Leopard (unlike with today's OS's), they actually took it. That, combined with the fact that SL was, to start with, a stability-focused release explains why it's missed. Well, that plus its clean emphasis on productivity.
When it was released it had a bad bug that wasn't fixed until 10.6.2. But if you want to avoid bugs, you don't install the early versions anyways.
And it was supported for 2.5 years after the final refinement (10.6.8) was released. Today you get at best a partially refined OS with the last release, and then need to switch in two years.
From
https://en.wikipedia.org/wiki/Mac_OS_X_Snow_Leopard#Reception
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