Update virtual-machine-solutions.md

Updating Guest OS support for TDX and AMD preview sign-ups

Author: michamcr

articles/confidential-computing/virtual-machine-solutions.md

@@ -89,12 +89,13 @@ Confidential VMs run on specialized hardware, so you can only [resize confidenti
 
 It's not possible to resize a non-confidential VM to a confidential VM.
 
-### Disk encryption
+### Guest Operating System Support
 
 OS images for confidential VMs have to meet certain security and compatibility requirements. Qualified images support the secure mounting, attestation, optional [confidential OS disk encryption](confidential-vm-overview.md#confidential-os-disk-encryption), and isolation from underlying cloud infrastructure. These images include:
 
 - Ubuntu 20.04 LTS (AMD SEV-SNP supported only)
 - Ubuntu 22.04 LTS
+- Red Hat Enterprise Linux 9.3 (AMD SEV-SNP supported only)
 - Windows Server 2019 Datacenter - x64 Gen 2 (AMD SEV-SNP supported only)
 - Windows Server 2019 Datacenter Server Core - x64 Gen 2 (AMD SEV-SNP supported only)
 - Windows Server 2022 Datacenter - x64 Gen 2
@@ -108,6 +109,12 @@ OS images for confidential VMs have to meet certain security and compatibility r
 - Windows 11 Enterprise, version 22H2 -x64 Gen 2
 - Windows 11 Enterprise multi-session, version 22H2 -x64 Gen 2
 
+As we work to onboard more OS images with confidential OS disk encryption, there are various images available in preview that can be tested. You can join below.
+
+- [Red Hat Enterprise Linux 9.3 (Intel TDX)](https://aka.ms/tdx-rhel-93-preview)
+- [SUSE Enterprise Linux 15 SP5 (Intel TDX)](https://aka.ms/cvm-sles-preview)
+- [SUSE Enterprise Linux 15 SAP SP5 (Intel TDX)](https://aka.ms/cvm-sles-preview)
+
 For more information about supported and unsupported VM scenarios, see [support for generation 2 VMs on Azure](../virtual-machines/generation-2.md). 
 
 ### High availability and disaster recovery