Yes, the Extended Security Updates (ESU) will include support for the .NET Framework 4.5.2–4.8 release (as of January 2020) and .NET Framework 3.5 Service Pack 1 (SP1).
Yes, the Extended Security Updates (ESU) will include support for the .NET Framework 4.5.2–4.8 release (as of January 2020) and .NET Framework 3.5 Service Pack 1 (SP1).