Hi,
As stated above, your best shot is to ask directly from the System Center team for example on
Twitter.
Exchange 2019 will also use
Managed Availability, this came already in Exchange 2013 and because of this Exchange has become more "self-healing" and the monitoring role become a smaller requirement, one of the reasons why a new Management Pack for Exchange 2016 was never
created.
However, there are still quite some new features coming to Exchange 2019 so let's see if a new Management Pack will be created or not.
If you do receive an answer from the System Center team we would be glad if you could share it with us!
Best regards,
Leon
Blog:
https://thesystemcenterblog.com
LinkedIn: 