Horizon 2506 dropped overnight! Got it loaded up in my lab this morning (upgraded from 2503) with no issues. If anyone is considering it, make sure you've reviewed the relevant KBs for the branding change, and LDAP namespace change. Reading the release notes yesterday, I'm pretty sure you NEED to complete the name change prior to upgrading to 2506 (using the powershell script, or having a fresh install of 2503).