I couldn’t attend Orchard Harvest myself unfortunately however more and more of the recordings are coming online for us to watch:
Orchard Harvest 2012 Keynote
The future of Orchard
Case study – Media garden
Building and managing a community
Migrating a website to Orchard
Performance and deployment
Search engine optimization
I do hope that the rest of the videos come online soon as well.
Btw, in case you didn’t know it yet, Orchard 1.6 recently came out. You can download the source from Codeplex or get a running site via WebPI or WebMatrix.