Just a note to users and the ESRI team, it appears that if I try to use the latest version of the Hybrid ESRI basemap (ortho and labels), in a webmap for Collector deployment, the option to take the map offline is disabled. As soon as I switch back to a standard ortho basemap, the download option is re-enabled on the tablet. Strange but true! I'm guessing it has to do with the labels in the hybrid basemap.
Anyone have other insight to this?