Steinberg have begun shipping Cubase SL for Mac OS X. Cubase SL is Cubase SX's little brother, in the words of Steinberg:
"Cubase SL is an exceptionally powerful program that offers both engineers in project studios and ambitious newcomers to home recording almost limitless possibilities to work intuitively and creatively.
With its VST and ASIO interfaces, Cubase SL offers exceptional flexibility that has set standards in sequencing. If you can do without features such as surround sound or a variety of automation modes, Cubase SL is an alternative solution that delivers everything you need. Let Cubase SL make your dream of a virtual studio on your computer a reality."