Wow! It sounds like you have seen a lot of major changes! But so far, no SysVinit->systemd nor dropping 32-bit i586 package builds for Slackware 15.0 and -current [0][1]. As someone new to Slackware I appreciate the balance of having lots of pre-built packages and just about everything that's not included as a build script on SlackBuilds.org (known as SBo by many) [2]. Are you still using Slackware today?
[0] http://www.slackware.com/changelog/stable.php?cpu=i386