Darren released the second beta of iSilo (http://www.isilo.com/info/beta/index.htm) and iSiloX (http://www.isilox.com/info/beta/index.htm) 4.28. It contains minor bugfixes for new features introduced in beta 1 (http://www.mobileread.com/forums/showthread.php?t=4619).

If you are new to iSilo make sure to visit this thread (http://www.mobileread.com/forums/showthread.php?t=2835) for more information.