I don't want to quibble just to be contrarian. Polaris Dawn was at the International Space Station's inclination, 52°, which is the most common destination for human astronauts. Isn't usually considered a polar orbit.
I want rather to clarify a really neat point, about what the other mission's doing. From KSC, you can conventionally only launch to inclinations below 62° [0] (constrained by populated landmasses). To get to a true polar orbit from Florida, that means they have to attempt a curved launch [1]—something that's pretty rare, and (to my knowledge) Falcon itself never tried before. (The parent comment was right to ask whether a polar orbit is possible: it does create interesting challenges).
