Poser Pro 2012 was the Pro version of Poser 9.  For a while Poser was released first the Non Pro Version then the Pro Version.  Starting with Poser 9 they released both at the same time.  And to tell the difference the pro version was named for the year of release or there abouts.  So you had Poser Pro (Version 7) Poser Pro 2010 (Version 8) Poser Pro 2012 (Version 9) Poser Pro 2014 (Version 10) after that it just became Poser 11 and Poser Pro 11, until Renderosity bought the program and combine it to just the single version Poser 11.3 which has all the features of the Pro version.  So the Current Version is Poser 12 released in 2020. And if you don't add the full name 2012 you could be confused. We will only have to go through this one more time when Poser 14 is released, sometime after Poser 13 sometime next year.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13