The new .NET Framework 4.8.1 is available for Release Preview Insiders for Windows 11, version 21H2 (original release), Windows 10, version 21H2 (LTSC), and Windows 10, version 22H2.
Microsoft has detailed how it plans to deliver .NET Framework version 4.8.1 updates via Windows Update channel and Microsoft Update Catalog on older Windows 11 and Windows 10 versions.
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Microsoft will not support a semi-annual release channel in the forthcoming Windows Server 2022, and users requiring frequent updates will be directed towards Azure Stack HCI (Hyperconverged Infrastructure).
In the old Windows Server world, users could choose between the Long Term Servicing Channel (LTSC) and Semi-Annual Channel (SAC) for installations, with LTSC being essentially the traditional model of a big release every two or three years, and SAC being more the as-a-service model with frequent feature updates to get the latest technology.
Businesses installing Windows Server for general-purpose use would normally use LTSC, which has five years of mainstream support and five years of extended support. The purpose of SAC is for container workloads (host or container image) or scenarios where a VM is short-lived and easily replaced. Limitations of SAC include only 18 months of support per release, a requirement for Software Assurance (a more expensive subscription licens