I assume that these are simply publishing deals, and therefore, the LGP staff are still working on their other games...
Go to the LGP website for more details:
http://www.linuxgamepublishing.com/info.php?id=15
http://www.linuxgamepublishing.com/info.php?id=16
http://www.linuxgamepublishing.com/info.php?id=17