Rocky has a good entry on his blog about Indigo and its role in the future. It’s a must read for anyone considering Architecture and things like SOA and message based applications. He raise some good points like we're stuck in this continues recreating new forms or remote procedure calls every few years and not gaining anything in the process.
Is Indigo compelling or boring?
For example, all this senseless debates wherever to use Remoting or Web services in the end might be useless because the real fundamentals don't get answered.