The LTSR (Long Term Service Release) version of Workspace app is version 1912 Cumulative Update 5 (aka ). It’s available in both the LTSR 1912 version and the Current Release 2109.1 version. Workspace app 1912 and newer support App Protection. Workspace app 2009 and newer have the new Citrix logo. Workspace app uses a YYMM (year/month) versioning format, of which version 2109.1 (21.9.1) is the newest. Browser Content Redirection, App Protection). The systray icon for Workspace app is blue instead of black, but Workspace app is otherwise identical to Receiver, except for new features that are only in Workspace app (e.g. Workspace app is the new name for Receiver.