Which is the latest and stable version of SugarCloud ? Please confirm on latest release notes -"https://support.sugarcrm.com/documentation/sugar_versions/13.1/ent/sugar_13.1.0_release_notes/" am I referring latest release notes ?

I want to know which is the lasted and stable version of SugarCloud. 

Is 13.1.0 latest version ?

Even with respect to release notes, am I accessing or referring correct link ? 1."https://support.sugarcrm.com/documentation/sugar_versions/13.1/sell/sugar_13.1.0_release_notes/"
2. "https://support.sugarcrm.com/documentation/sugar_versions/13.1/ent/sugar_13.1.0_release_notes/"
3. "https://support.sugarcrm.com/documentation/sugar_versions/13.1/serve/sugar_13.1.0_release_notes/"

Please confirm on above mentioned points.