I talked about the Page LifeCycle earlier.  Here is the complete Page LifeCycle.  Unfortunately, this lame sharepoint control doesn't support tables so the list doesn't look very pretty.  I've hilighted some but not necessarily all of the new events.  Remember where this list is, because you will probably want to refer back to it at some point.
Constructor Always
Construct Always
TestDeviceFilter Always
AddParsedSubObject Always
DeterminePostBackMode Always
OnPreInit Always
LoadPersonalizationData Always
InitializeThemes Always
OnInit Always
ApplyControlSkin Always
ApplyPersonalization Always
OnInitComplete Always
LoadPageStateFromPersistenceMedium PostBack
LoadControlState PostBack
LoadViewState PostBack
ProcessPostData1 PostBack
OnPreLoad Always
OnLoad Always
ProcessPostData2 PostBack
RaiseChangedEvents PostBack
RaisePostBackEvent PostBack
OnLoadComplete Always
OnPreRender Always
OnPreRenderComplete Always
SavePersonalizationData Always
SaveControlState Always
SaveViewState Always
SavePageStateToPersistenceMedium Always
Render Always
OnUnload Always
This article has more information about some of the changes in ASP.NET 2.0 and has been updated to reflect the changes in Beta 2.

Read the complete post at http://www.dotnettipoftheday.com/blog.aspx?id=134