[SOLVED] When Slackware-15 finally comes out, what happens to Slackbuilds.org?

Official slackbuilds are very tightly integrated with the current Slackware release, so what happens when this changes? It must surely take a long time to check, and if necessary, rewrite all the slackbuilds to work reliably against the new libraries, especially as they are all contributed items. Also, most distros continue to support the old release for a while so as to give users time to change, and I assume Slackware does too. How would having two parallel releases affect slackbuilds?