Microsoft announced in the bulletin it shared yesterday that it has changed the update model for the Exchange Server.
Updates published quarterly (March, June, September, and December) were changed after feedback from customers. And they announced that they have commissioned a new update service.
In the announcement, two CU’s per year – will releasing in H1 and H2 of each calendar year, with general target release dates of March and September (these dates may change).
Have a nice day !