there was a 17 beta. why wasn't it posted here

title says it all

It wasn’t supposed to be beta.

Comodo Dragon ver 17.0 is now available for download

I knew 17 stable was released. that’s how I found out about the beta issue. so they just accidently put beta in the code of the stable release?

Yes.

My assumption is that they probably have some selected testers or they do not deem it to be buggy enough to be labeled as a Beta, thus skipped to the Stable release.