What is the latest RHINO 5 stable version?

Hello!

I wonder if any could tell me what are the latest stable version of RHINO 5?

I have Rhino 5 SR9 but i have found some issues on curves that suppose to be hidden

Right now it is 5 SR 11 ( Rhino: Menu Help -> About shows your current version)

To check / update, the easiest way is from Rhino itself. Menu:Help -> Check for Updates and it will tell you if there any updates.

Do you found it better and more stable then Rhino 5 SR9?

Did SR11 correct all bugs from SR9?

As always for software, Newer versions fix some bugs and introduce some new bugs.

Check the release notes and see for your specific issues.
http://www.rhino3d.com/download/rhino/5/latest/changes

thanks.

I will studie that