There are certainly questions that need to be answered by Apple.
I commented myself a while back how my fairly new MBP began to slow, and I guess this is to blame.
If you are a little bit cynical, you might be forgiven for thinking Apple will be able to use tactics like this to purposely slow down older macs - prompting people to upgrade more often. Maybe they are doing this already with the iPhone, as they certainly seem to get that little bit slower every 6 months or so…