The wording of True Strike is:
You gain temporary, intuitive insight into the immediate future during your next attack. [...] Additionally, you are not affected by the miss chance that applies to attackers trying to strike a concealed target.
The wording of Sneak Attack is:
The rogue must be able to see the target well enough to pick out a vital spot and must be able to reach such a spot. A rogue cannot sneak attack while striking a creature with concealment.
By a strict reading, the target still has concealment, even though you are not affected by the miss chance. And you can't see the target any better, you just have insight to guide your attack.
On the other hand, your insight is good enough to give you a +20 to your attack and bypass miss chance from concealment, this should be good enough to let you "pick out a vital spot".
As a GM, I would lean towards allowing it.