Yes my 522 received yesterday morning. Although I havn't really noticed anything different yet. I also have not had most of the problems listed here(knocking on wood) so I don't know if it will correct anything at all for me.
I saw a post that said they're listing 1.68 and 1.69 on their software page. This means that it's not getting pushed to ALL receivers yet. They'll only push it to "certain" receivers .... and no one really knows how they're chosen.
joe236: Can you give any partial serial numbers or identifying numbers of your receiver ??