All the recordings of the Microsoft Windows Server Summit 2024 event sessions are available on YouTube.
You can watch them on demand here

Here are some highlights of the Windows Server Summit 2024 event which I picked out:

Full Stack Native NVMe Support

Container Flexibility

SMB in Windows and Windows Server 2025

The Intel Xeon Processor Designed for AI

You can Upgrade to Windows Server 2025 via Windows Update.

Windows Server 2025 Security.

Delegated Managed Service Account.

Hotpatching for Windows Server 2025

Watch The evolution of Windows Authentication by Ned Pyle