Will the iPhone 4s still be supported until 2016?

Will the iPhone 4s still be supported by Apple until 2016? What I mean by supported is that if it is still going to be on Apple's website?

1. Until when will the iPhone 4s be supported by Apple? Because I remember before that the 3GS was still on Apple's website when it was already 2012.

2. Is the iPhone 4 still supported? Because I can still see in the App Store that in the requirements they still say iPhone 4 and above

3. Will iOs 8 support the 4s when it gets released in the future?

Thanks!