Excellent news! I received an announcement last night that iSiloX is getting automated scheduling added to the desktop tool. The beta preview of iSiloX 3.35b is available for Mac OS X and Windows.
I've only briefly experimented with the new feature in the beta, and so far it looks good. However, each channel must be set up for a schedule individually. While that's great for flexibility, I'd really love to see a feature that would let me apply a schedule globally to all channels as well as individual channels, so I don't have to manually fiddle with every channel if I want to make a global change.
Still, even this fist step is welcomed. Even better would be an iSilo conduit that would work much like AvantGo's conduit, but I suspect that's either a long way off or wishful thinking on my part. Still, here's to hoping. :-)