Polaris is more commonly known as the North Star, it's a bright star that's easily recognizable by stargazers.
Curiously, now that we know that Polaris is the codename of the new architecture, some cryptic tweets from Radeon Technology Group head Raja Kodury and AMD marketing guy Chris Hook suddenly make a bit more sense.
In the tweets below, Raja Koduri points out that Polaris is 2.5 times brighter today than when Ptolemy observed it in antiquity. This could perhaps be a reference to the difference in performance/Watt versus the current-gen Radeon series.
@Gchip Polaris is 2.5 times brighter today than when Ptolemy observed it in 169 A.D
https://t.co/Qgf6C89dSN
— Raja Koduri (@GFXChipTweeter) 26 november 2015