The session “Leveraging What You Have: 10 Top Things Added to Delphi Since Delphi 7″ by Pawel Glowacki was one I was looking forward too. The audio and video quality was a little poor, so I skipped it to watch later when I had more time. Pawel posted his list though, with a lot of details. That is probably more valuable to me then the video session. If the video was chopped up by list item so I could jump to a feature I was unfamiliar with, that would be really cool.
There are a lot of really cool enhancements since Delphi 7. I know a lot of people were holding out on Delphi 7 because it was such a solid release. Delphi 8 was .NET only, and of questionable stability. Since then each release has gotten much better. I must say, Delphi 2007 is definitely worthy of an upgrade from Delphi 7.