Hi,
I haven't seen it announced anywhere, but ActiveState are now providing
x86 and
x64 MS Windows builds of perl-5.18.1 from
this page.
My understanding is that these will have been built using mingw64 ports of the gcc-4.6.3 compiler ... but I didn't go to the trouble of checking.
It'll be interesting to see whether they're well received.
Cheers,
Rob