OM System 12 40mm f2 8 ii PRO Lens Review - is this simply a re-branded Olympus lens?

The title says it all, in this video I review the new lens from OM-System, but is it a new lens?
Sample images:
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OM5 & EM5 III Sample Images:
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Photo editing software:
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[@weekendwanderer5514]

I’ve been shooting Olympus since the EM1 (Mark 1) but no OM System release since the OM1 has enticed me to spend any more money on the brand.

[@janwedek]

Same, although in fairness, if I were a macro shooter, I'd probably be VERY excited about the 90mm macro

[@MichaelGerrard]

What about the 12-45 f4? I have considered it because it is smaller and lighter than the 12-40 f2.8. It would be interesting to see a comparison.

[@trulsdirio]

RED35 has made a great comparison. In short, the 12-45 is slightly sharper at the long end, the 12-40 on the wide end, if stopped down to f4. You loose a stop of light and the focus clutch, but gain 5mm and the size and weight advantage. I went for the 12-40 1:2.8 as I just throw in a 45mm 1:1.8 if I absolutely need that extra range, but gain that stop of light and love the focus clutch. The size and weight feels at home on my E-M1 II, but the 12-45 1:4 feels nicer on the E-M5 sized bodies.