The significant changes to the various parts of the compiler since 7.0.2 are listed below.
GHC on OS X now works with XCode 4.
Object splitting (which gives smaller binaries) is now enabled on OS X provided you have XCode 3.2 or later.
A compiler panic when compiling large files with LLVM has been fixed.
Some bad floating point results on x86 have been fixed.
The -read_only_relocs flag is no longer used
on OS X 64, which eliminates some warnings.
Some section misnumberings in the documentation have been corrected.
The documentation is installed into the correct location by the Windows installer.
The documentation is now included in the OS X installer.
Some small documentation tweaks have been made.
Some duplicate files have been removed from the bindists.