Patrick is now testing the new toolchain combination that will be used for the next Slackware release. So far, he has come up with Linux Kernel 3.7.1 and GCC 4.7.2, but no decision has been made for glibc because new version remove a basic function, gets(). Pat is still testing it, so he didn't put any public release for now. Some other packages that are related with basic toolchain such as binutils and oprofile are being upgraded as well.
Please note that this is only a preliminary attempt to make a stable and solid base for the next Slackware version, so the final version of those toolchain will likely be different from what you see today, but it's a good start.
At least we know that the current development is now warming up and it will be continued next year