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-LLVM has only been extensively tested on Intel and AMD machines running Red
-Hat Linux, and Sun UltraSPARC workstations running Solaris 8.
+LLVM has been extensively tested on Intel and AMD machines running Red
+Hat Linux, and Sun UltraSPARC workstations running Solaris 8.  Additionally, 
+LLVM works on Mac OS/X 10.3 and above, but only with the C back-end (no native
+backend for the PowerPC is available yet).
 The core LLVM infrastructure uses "autoconf" for portability, so hopefully we
-work on more platforms than that.  However, it is extremely likely that we
-missed something.  We welcome portability patches and error messages.<p>
+work on more platforms than that.  However, it is likely that we
+missed something, and that minor porting is required to get LLVM to work on 
+new platforms.  We welcome portability patches and error messages.<p>
 
 
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