Asterisk 16 has numerous architectural changes that impact connected products. Our development team has implemented Asterisk 16 compatibility, but will not release thr code until Asterisk 16 has stabilized, and we see companies implementing Asterisk 16 in production.
As of March 2019 Asterisk 16 is not widely placed into production yet, and so we advise you to NOT upgrade to Asterisk 16 at this time. Since you are a registered HAAst user you are welcome to download a pre-release version of HAAst which supports Asterisk 16.
Asterisk 16 has undergone some significant changes since initial release, and until the product has stabilized we do not recommend placing Asterisk 16 in production.[/i][/color]