• Endian: Types and conversion functions for correct byte ordering and more regardless of processor endianness.

• Sort: includes spreadsort, a general-case hybrid radix sort that is faster than O(n*log(n))

• WinAPI:

For details of what's in the release, see http://www.boost.org/users/history/version_1_58_0.html.
Note that the links to files on this web page are for the final release - use the SourceForge link above to get the beta files.

Please download the beta, give it a try, and report any problems you encounter.

IMPORTANT NOTE:
There is a bug with the build scripts; you have to specify the address-mode and architecture to b2.
I used:
./b2 address-model=64 architecture=x86

(this will be fixed before the final release)

Thanks,

-- The Boost Release Team