I have not get switched to iCloud but when I updated my MBP to Lion I noticed that inside of the Mail, Contacts and Calendards dialog box under my MobileMe account the option for Contacts is missing. I am sure that if I would have not upgraded to 10.7.2 this would not be the case.
Strangly enough all of my contacts are on my phone under the tab Bryan's MobileMe....
To add to my frustration the option to sync my MobileMe contacts, calendars and bookmarks will not engage. I think this is because they are iCloud features but I have not yet switched to iCloud...
I am sure they will fix this soon but regardless I am calling Apple to complain and only because I have been a MobileMe member for 3 years and I paid for this service and I will get this resolved.