There's no original content in this post, but here's what people are saying about WCF and ASMX interoperability in the Microsoft forums and other blogs over the last month or so:

ASMX

WCF method returning a strongly typed collection to a .NET 2.0 client

Trouble getting a WCF return a collection to a .NET 2.0 client

Issues with generating .net 2.0 client for consuming a WCF service

WCF method returning a strongly typed collection to a .NET 2.0 client

Making an asynchronous call from a .Net 2.0 client(asmx) to a WCF method

 

Java

netTcpBinding and Java Web Services

WCF and Java WS client

WCF bug in message deserialization?

Interop problem: WCF service & Java client

.NET/Java double-dimensional (jagged) array interop

Custom Binding requires a Timestamp

Accessing : <?xml version="1.0" encoding="UTF-8"?>

 

Other

Why your NetCF apps fail to call some web services

 

Security

How to Create a SAML token parsing the SOAP / RSTR Response

WS Security interoperability between Java and .NET web services(Urgent)

 

Sun

Interop Briefs: Begin at the Beginning...

New WSIT Plug-in coming

Sun understands WS-* very well!!!

SOA and WCF

Can Sun do WS-*?

 

Web Clients

Connecting to WCF from Javascript\XMLHTTP

calling a webservice from classic asp - what are the limitations?

SOAP Services and XML