David Heinemeier Hansson seems to be doing the rounds right now and appearing in interviews everywhere. Reg Developer have an interview with the creator of the Web Framework on their site.
The interview covers the usual big questions: will is scale, is it secure, is it suitable for enterprise applications? Hansson must have answers for these questions preprepared by now, as these are the issues everyone is asking. Other than the sites that Hansson has developed himself using Rails, I think time will tell and it only has to be a matter of time before a large enterprise project takes the jump and takes Rails for a spin. Like Hansson says in one of his replies, the answer on whether to use technology X verses Y is usually a political one, and it not necessarily decided on technical excellence alone. Like COBOL 20 – 30 years ago, nobody get’s fired for choosing Java.