I don't think it will be a message of unity. The President has declared war on the GOP and he intends to wage a scorched earth policy battle with no quarter given. It's not enough for him to defeat the loyal opposition, he wants to annihilate it. And, this war won't be confined to the Republican Party but will take on its allies as well, such as the National Rifle Association and others.
The course for the President's second term was made clear during the fiscal cliff "negotiations" and it wasn't conciliatory. It was more like "Obama Unleashed!"