Microsoft finally released the toolkit for developing ESB solutions based on BizTalk Server.
if you're a BizTalk developer and 'ESB' is your second name [the first one is probably 'SOA' :-) ] this set of powerful tools was designed exactly for you. It can make your life match more happier and save you a lot of coding time.
you can find the ESB Guidance on the MSDN Here
In the next few posts I'll give you a deep dive into this new exciting tools and framework.