It seems you want to ask something else. Latest version is sitecdore 9.2. you can get more information on sitecore latest versions and download at
According to Sitecores release cadence, Sitecore 9.1 should be published in fall. I guess late/Mid-November it should be available.
In reply to Kapil Naker:
In reply to Markus Klimmasch:
Correct we are on 9.0.2 right now. XM/XP 9.1 will be releasing end of November 2018
In reply to Lynnette Mclaughlin: