Few days ago, Eric decided to create a warning README about KDE SC 4.5 that it would no longer suitable for 13.1 as -Current is moving too far away from 13.1. I don't get the idea at that moment as i didn't see any big changes in -Current except for security updates.
But today, i finally get his idea. It's because -Current has started again and the first batch of updates are coming in.
Right now, most of the packages being upgraded are located in a/ and ap/. I think Pat wanted to have a stable base packages and then decide what version of GCC and glibc should be used for the next Slackware release.
For now, have fun with -Current