You keep promising...

Lately, I've been getting this announcement on the top of my gmail page.. telling me that coming soon are better ads in gmail! Of course it's in bold and exclaiming it much more enthusiastically than I did. I'm rather intrigued.. it's been coming up for a while and I'm wondering where these new, better ads are. When are they coming then? What exactly does better ads entail? And what does it mean that now, we.. that is those of us using gmail, or in fact anyone anywhere using any type of media is getting ads for ads? Even if they're better ads?

Well?