Obvious? Why?
Take a moment and understand why things are so obvious to you guys.
It is because we have such websites like MacrRumors.com
We forget how much work goes into running a site like this.
Collecting and evaluating data seems like an easy task?
Try finding your reliable sources in the first place! It's like searching for a needle in a haystack.
All this bickering and complaining about the nature, value or constituents of new articles is becoming really boring.
Edit:
And yes, it does make sense to believe that the upcoming iPhone / iPad devices will also sport the already well-received fingerscan button. At the same time, Apple is a company that is also known for moments where it could as well discontinue a well received part of their products, for the better of the overall good (e.g. the apple boombox speakers.) Even if this might not be exactly a rumor in the traditional sense, it does emphasize a potential point and not a fact.