If I understand Thomas Lübking (bespin dev) right, he won't be releasing anything in the near future. Bespin is IMHO one of the greatest styles (if not THE greatest?) for Qt4/KDE4. Having it only as a live-ebuild in the kde-overlay is a great pity. So I propose to add snapshots to portage. It is not that dangerous, as Thomas really manages to keep his code stable.
+*bespin-0_p20120703 (04 Jul 2012) + + 04 Jul 2012; Chris Reffett <creffett@gentoo.org> +bespin-0_p20120703.ebuild, + +metadata.xml: + Snapshot of package already in KDE overlay, wrt bug 424595 Committed to main portage tree, give us a shout when it's changed enough that it's worth another snapshot.