Just spotted this over in the asp.net developer center, useful to know in advance for anyone working under the golive licence.
List of Major Changes for Visual Web Developer 2005 and ASP.NET 2.0 from Whidbey Beta 2 to RTM
For me the handiest change is the introduction of transitional xhtml, as it'll give me some time to kick my code into shape. I can live without the name attribute on my form tags, but all my script blocks use the language attribute and most of my anchors use targets, so I've some work to do yet. Theres a good comparison of strict and transitional xhtml here .