No. However, it will change it (for the better).

Yesterday on the Google Blog, Sep Kamvar (Engineering Lead for Personalization) and Marissa Mayer (VP) announced some new changes to the way Google does personalized search for users…

Today, we’re taking another step toward making personalization more available to you by combining these two into a single signed-in experience. Now, when you’re signed in, you’ll have access to a personalized Google—one that combines personalized search results and a personalized homepage.

Keep in mind that personalization is subtle—at first you may not notice any difference. But over time, as the search engine learns your preferences, you’ll see it. For example, I (Sep) am an avid Miami Dolphins fan (no joke). Searching for [dolphins] gives me info about my favorite football team, while a marine biologist colleague gets more information about her salt-water friends.

Google account users will have to “opt-out” if they don’t want to have their search results personalized, and I’m guessing not many people will care about opting out.

In effect, this signals the end of universalized search results which everyone sees the same. Now it’s about relativity.

Danny Sullivan has provided an incredible in-depth conversation starter here. I highly recommend reading that, as I don’t have much to add to his exhaustive post. I would point you to a few corollary posts on the subject of personalized search and SEO implications by Gord Hotchkiss.

This will not be an immediate change, but as users build up their individualized search histories over time, the money poured into SEO tactics will become less and less efficient… unless you proactively think ahead and start planning strategies to reach people on a personalized and niche level.