I agree that if we are still around then everyone will be able to live much longer. Here is an article where a geneticist talks about humans being able to live to a 1000 years old, and he talks about having the technology in only 25-50 years.
Geneticist article
The article is to short and doesnt really say that much though, but it is still interesting to think your kids or grandchildren could live to be 900 years older than you.