I'm sure they haven't, Gregg.
*My Opinion*: If they haven't bugged you, its probably because they know they have you where they want you. Oracle knows this too. By dropping support, you're either going to stay on the same release forever, or implement an alternative solution. The problem with dropping support is that if you try to go back, Oracle is going to hit you hard with a massive "backpayment" bill, starting from the time you dropped support in the first place. Of course, everything is negotiable.
I don't have a beef with TomorrowNow (SAP TN), as a matter of fact they offer a good service under the right circumstances. (Pending litigation notwithstanding). For instance, say you want to upgrade to a new release but your current release is dropping support soon; in this instance you may want to supplement your existing application with third party support (any number of vendors, including Jon Steel's group, offer this) while you're planning your next upgrade.
*My Opinion*: (and mine only): Ultimately, SAP wouldn't have the TN business if it weren't for the potential customer aquisition aspect. It wouldn't make any business sense other than to hedge their bets (which would be to admit defeat in some investors eyes).