well, no. not really. you could program another chip and you would have to do your own board for it. If you've done that sort of thing before, there are some options. Google cublok for a PLC on a chip (BASIC and ladder logic programming needed there), but someone pointed it out in my HVAC thread and it is sexy. You could make that puppy do pretty much whatever you want, but it is starting from scratch.
I know it's still something they hope to support someday.