Orpheus, I think you should be excited. For us 513 drivers, it certainly looks like a 513 light, but it's own guitar with its own voice. It is definitely a more vintage sounding PRS. Closer to the strat and tele territory than the 513 ever got. I am currently looking into getting one of the first production 509's, so I can compare it with the GOTM version. I certainly hope it is the magical touch sensitive and articulate instrument that the PS is.
Given the push toward the vintage market with the 594 and moving the core line closer to the vintage PRS sound with the widespread introduction of the 85/15 pick up, it could be argued that PRS is heading more vintage, so it's not surprising that the 513 was pushed toward the vintage voice. Gravity sucks. The 513 wasn't new enough to resist it like the 408. In fact, there's only one guitar in the core line up that currently sports anything that could be considered a high output pick up, the Floyd Rose equipped custom 24. The Tremonti is gone.
However, that being said, I think it was mistake to withdraw the 513. It kind of destroyed the built in market of 513 fans that might have tried it that now view it as a inferior replacement for the 513. I certainly viewed it that way when I first saw it and almost didn't jump on it. I am glad I did, because it convinced me one note at a time that it was an exceptional instrument. What I am currently concerned about is that this guitar will not get the shake it deserves, and it will follow other single coil guitars into the void like the DC3 and the 305 which were no where near as good as the 509 is. After that, nothing will remain.