WCF Services or RIA Services

Question

We are in the middle of the development cycle of our new product. When we designed it about a year ago, we chose the combination WCF Services-> Silverlight. Some of these WCF services are also used by WPF, Win Forms, and third-party Java clients. Recently I read about RIA Services.

My questions

• What are the benefits we get with WCF RIA services through simple WCF services?

• Can a WCF RIA service be used by a Java client?

• Does the product part with regular WCF services and some parts in RIA WCF services make sense?

• Are there any problems with the configuration of these two parts?

• What can use WCF RIA for regular WCF services?

Thanks for your input, Suresh.