Citrix has released a new version of Citrix Receiver for Windows, new version is 4.4.1000.16 (CU1)
You will find ADMX/ADML files in the installation folder (C:Program Files (x86)CitrixICA ClientConfiguration) or here https://www.citrix.com/downloads/citrix-receiver/windows/receiver-for-windows-latest.html
Download installation file :
https://www.citrix.com/downloads/citrix-receiver/windows/receiver-for-windows-latest.html
Changes is this version and documentation: