Hi irishmike! Welcome back to the world of the Amiga.
Amiga OS4 requires a PowerPC based system. When the final version of OS4.0 is released, it will run on A1200s and A4000s with PowerPC upgrade cards, and the new AmigaOne systems.
For now, only a developer pre-release is available, and only for the AmigaOne.
There is a list of AmigaOne dealers on the right hand panel of
AmigaWorld.NET, which is also the official AmigaOne/OS4 community portal.
