Olympus Europe made a mistake: The E-PL5 has same AA filter as the E-M5.
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A couple of weeks ago Olympus Europe informed Pierre Paul Lepidi (translation here) that “As agreed during our recent telephone conversation, we confirm that the unit E-PL5 lacks the LPF, low-pass, unlike the M5-E device.”
Now Olympus Europe admitted that this was a wrong statement. They now corrected the E-PL5 specification info on the official website and confirmed that the E-PM2, E-PL5 and E-M5 do have the same sensor and the same Anti Aliasing filter. Source: Lepidi (translation here).
Yep, even big companies can do mistakes sometimes. But I am surprised that it took one month(!) to get and admission of error. Oly, you can make it good by leaking us some good news about your future products :)