Nope, its the 50 f/3.5 version. Zuiko 50 and 90/2 Macro is supposed to be great but I decided to start with the 50 f/3.5 because of its lower price. Macro Extension tube arriving later this week, should be fun, but now I seem to want a 60Macro-R too, not sure how much better it is over the Zuiko 50/3.5 Macro though.
oh, I know. I actually own both the 3.5 and 2 versions myself.
as far as Macro Elmarit goes, I definitely think it's worth the money. It's a very good lens and probably the best f2.8 macro in that FL ballpark. I ultimately got the Zuiko 50/2 instead since I still shoot OM film cameras. Between the two, the Zuiko is faster, cheaper, and probably not any worse in performance, but is harder to find and has very noticeably hexagonal specular highlights even if it does do really, really well in OoF otherwise.