Where did you get convinced that is called 2021? First aside the odd 2015 there is a 3 year cadence and 2019+3 = 2022 Second the Server LTSC 2022 is already out by some time and no way they will call differently its client sister.
LTSC has not "Media Foundation Dolby Digital Atmos Decoders" packages. Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.16299.15 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.16299.15 Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.17134.1 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.17134.1 Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.17763.1 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.17763.1 Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.18362.1 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.18362.1 Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.19041.1 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.19041.1 Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.20348.1 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.20348.1 Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.22000.1 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.22000.1
Updated the 1809 Updates Overview: https://forums.mydigitallife.net/th...-17763-xxx-pc-rs5.77945/page-216#post-1490183 Removed all flash related updates!!!
I don't know which one of them is? Multimedia-RestrictedCodecsDolby-Package~31bf3856ad364e35~amd64~~10.0.17763.1 Multimedia-RestrictedCodecsDolby-WOW64-Package~31bf3856ad364e35~amd64~~10.0.17763.1
@ch100 21H2 Enablement Package KB5003791 and LCU KB5004296 support EnterpriseS editions additionally, LCU KB5004296 contain updated licenses for EnterpriseS editions (they are fairly the same ones for LTSC 2019) non of 1904x updates had that before LTSC 2022 (or whatever it will be officially called) will be 19044 based Server 2022 gets 10 years, LTSC 2022 will get 5 years that's one of the reasons to separate them
One of the main issues with separating server from desktop releases is that server RDP for end-user solutions, either Microsoft or enhanced third party solutions like those from Citrix, will not be consistent any more. I suppose Microsoft's intention is to have Windows 10 RDSH version for those solutions. However RDSH is only cloud based, all driven by marketing I suppose.
BTW RDSH is technically a server with the W10 branding. It has to be given the RDP behavior is controlled by the client/server kernel policy.
Updated the 1809 Updates Overview: https://forums.mydigitallife.net/th...-17763-xxx-pc-rs5.77945/page-216#post-1490183