Developers behind the lightweight Qt-based Razor-qt and LXDE-Qt desktops met up at KDE's Akademy 2013 conference. During the annual KDE developer conference, the two lightweight desktops decided to merge their efforts around LXDE-Qt.
With Razor-qt struggling in terms of manpower and their v0.6 release falling behind, they've decided to do the 0.6 release and after that pick the best pieces of Razor-qt and LXDE-Qt and merge them to one. Developers from both projects are on board and they hope it will drive development.
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And: LXDE-Qt May Join The KDE Group