This is more informational than it is a question, but I am surprised it is not documented. We were on Horizon 7.11 Standard, which means we did not have the license for instant clones. Then 7.13 came out and included instant clones with the standard license, I assume to assist users with upgrading to Horizon 8. So on my project to upgrade to Horizon 8 I first upgraded to 7.13, and converted all my pools to IC, and then decommissioned composer. Then, today, I went to upgrade to Horizon 8 2006 and when I ran the Horizon 8 installer on the connection server I received the error: This installer can not upgrade over the existing Horizon connection server version. Please uninstall the existing version before attempting to install this version." I went back to review the upgrade documentation and nowhere does it say you first have to uninstall the 7.x connection server. A bit research on Google, and the only place I see any comment about this is in the esteemed Carl Stalhood's 2006 Connection server document, in the comments https://www.carlstalhood.com/vmware-horizon-8-connection-server/ .

He suggests that since 7.13 is newer than 8 2006, 7.13 users should wait until the next release of 8. So essentially 7.13 - 8 2006 is a downgrade. All this is to say if you are on 7.13 wait for the next release of 8.