http://blogs.msdn.com/sowmy/archive/tags/.NET+3.5/default.aspxTags: .NET 3.5en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/sowmy/archive/2008/11/21/new-additions-in-3-5-sp1.aspxFri, 21 Nov 2008 06:30:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:9131330sowmys3http://blogs.msdn.com/sowmy/comments/9131330.aspxhttp://blogs.msdn.com/sowmy/commentrss.aspx?PostID=9131330<P>In .NET 3.5 SP1 the following features are added to the DataContractSerializer.</P> <P>1. Support for POCO types. Aaron has a nice writeup <A class="" href="http://www.pluralsight.com/community/blogs/aaron/archive/2008/05/13/50934.aspx" mce_href="http://www.pluralsight.com/community/blogs/aaron/archive/2008/05/13/50934.aspx">here</A>. I have updated my post on <A class="" href="http://blogs.msdn.com/sowmy/archive/2006/02/22/wcf-serialization-programming-model.aspx" mce_href="http://blogs.msdn.com/sowmy/archive/2006/02/22/wcf-serialization-programming-model.aspx">Serialization Rules </A>to include this.</P> <P>2. Support for get-only collection properties.</P> <P>3. Support for schema-verifiable multiple object reference (i.e using the same instance of an object in two places)</P> <P>Another new feature worth mentioning is the support of XmlSerializer for serialization of faults. I will write more about each of these features in the near future.</P><img src="http://blogs.msdn.com/aggbug.aspx?PostID=9131330" width="1" height="1">DataContractSerializerWCF.NET 3.5Serialization