Apple appears to be working on full Project Catalyst versions of Messages and Shortcuts for Mac, according to hints of the new apps found by developer Steve Troughton-Smith.
Troughton-Smith found that the Project Catalyst software on macOS Catalina includes Shortcuts frameworks suggesting a future Shortcuts for Mac app, and now it appears Apple is also working on a Catalyst version of the Messages app.
https://twitter.com/stroughtonsmith/status/1141424107768209410
https://twitter.com/stroughtonsmith/status/1141450446743228416
https://twitter.com/stroughtonsmith/status/1141458050135539712
MacDailyNews Take: Yes, please, for both, but certainly for Messages which could sure use some love on the Mac!