Changes to include info on ASEA-LZA Upgrade (#1123)

* Changes to include info on ASEA-LZA Upgrade

* Updated urls to Regional & Industry configs

README.md

@@ -2,9 +2,11 @@
 
 The [Landing Zone Accelerator (LZA) on AWS solution](https://aws.amazon.com/solutions/implementations/landing-zone-accelerator-on-aws/) is now the recommended solution for organizations seeking to automate the deployment of a new high compliance AWS Environment.
 
-The LZA v1.3 release focused on delivering AWS Secure Environment Accelerator (ASEA) feature parity and delivered both [CCCS Cloud Medium](https://docs.aws.amazon.com/solutions/latest/landing-zone-accelerator-on-aws/canadian-centre-for-cyber-security-cccs-cloud-medium.html) and [Trusted Secure Enclave Sensitive Edition](https://docs.aws.amazon.com/solutions/latest/landing-zone-accelerator-on-aws/trusted-secure-enclaves-sensitive-edition-for-national-security-defence-and-national-law-enforcement.html) sample configuration files.  These samples deliver similar outcomes to the ASEA sample configuration file.
+The LZA v1.3 release (03/2023) focused on delivering AWS Secure Environment Accelerator (ASEA) feature parity and delivered both [CCCS Cloud Medium](https://aws.amazon.com/solutions/implementations/landing-zone-accelerator-on-aws/#Support_for_specific_regions_and_industries) and [Trusted Secure Enclave Sensitive Edition](https://aws.amazon.com/solutions/implementations/landing-zone-accelerator-on-aws/#Support_for_specific_regions_and_industries) sample configuration files. These samples deliver similar outcomes to the ASEA sample configuration file.
 
-The LZA team is currently developing a semi-automated upgrade from ASEA to LZA. If you are using the ASEA, there is currently no deadline to migrate to the Landing Zone Accelerator on AWS solution.  Please reach out to your AWS Account Team with any questions.
+The LZA team is currently developing a semi-automated upgrade from ASEA to LZA. Upgrades from ASEA to LZA must occur before Q2 2024. Please monitor this site for a future LZA release that will support the ASEA to LZA semi-automated upgrade capability [here](https://aws.amazon.com/solutions/implementations/landing-zone-accelerator-on-aws/).  
+
+Please reach out to your AWS Account Team with any questions.
 
 # AWS Secure Environment Accelerator