Considering that the Pit Fiend, an epic devil, has only a +2 to saves, I find it unlikely that a base player race would get any bonus to saves at all. At least not as a starting racial power. This may be a human racial feat that you can take at Paragon or Epic teir.
I imagine the base racial power for humans will be the minor action second wind. They'll probably still get an extra feat, because they are still the most flexible race. But that extra feat has less impact now that everybody gets way more feats than they ever did in 3.5. They'll probably also get an extra trained skill.
What I'd really like to know is what ability score bonuses, if any, the human gets.