Referer headers are still sent when you go from one SSL page to another. So, the greatest impact of this development will actually be to force the rest of the web to use SSL, because they need it for analytics.
I didn't' realize the referrer (and querystring param) was sent cross domain over SSL. So as long as you are utilizing SSL everything should remain the same.
Yes well, regardless of what any SEO blogs may say, the fact is that browsers do send referer headers when travelling from one SSL page to another.
So unless gAnalytics is going to be deliberately ignoring incoming referer headers in particular circumstances from now on, things should remain the same if your page uses SSL.
I willing to believe however that they actually are going to be deliberately ignoring/discarding the data even when it's available. That would certainly make the EU happy.
