As you may have heard via the Wall Street Journal or New York Times or Search Engine Land - Google has settled with the European Union after a 2-3 year probe.
The settlement will require Google to:
(1) Clearly label Google's own results in the organice results.
(2) Add competitive links in certain situations.
(3) Make sure third parties validate this is going on.
Some of Google's competitors are not satisfied with this settlement according to Bloomberg - but I guess it is a pretty good deal for them.
It is hard to say without seeing how this will be implemented. I think the implementation of these changes will happen in about a month and I am not sure if it is just within the EU or going to be a more universal change. But trust me, as soon as Google tests this, I am sure we will report it to you.
Forum discussion at WebmasterWorld & Threadwatch.