You're not missing anything. There are Acrobat v9 update packages in the catalog, which were packaged prior to the SolarWinds acquisition of EminentWare. The Acrobat v10 and Acrobat v11 packages only come from Adobe via the Adobe Acrobat catalogs, and as far as I understand, those are update-only packages and require a pre-existing instance of Acrobat. I'm not aware that a full-installation for Acrobat would exist, since Adobe controls access to those binaries through product sales and licensing.
Generally speaking, you would need to create a custom package to deploy a fresh installation of Acrobat v11.