Good article here. I'm posting here as a bookmark for myself, but also so you should check it if you haven't already.
Mike Gunderloy wrote an excellent article introducing the use of CLR code to manipulate data in Yukon.
If you are wondering what .NET stored procs are going to look like, check this article out.
Randy Holloway has some great notes from the PDC on Web Services in Yukon.
Looks very interesting