Sony 20mm 2.8 for NEX

I know a lot of people are talking about the new Zeiss 24mm and all of that but ...

What about a 20mm 2.8 from SONY (same size as the 16mm) that avoid all the weird distortions present on the 16mm ?! Each time I see someone begging for new lenses, I only see 30, 50, 100 and so on ... They have the idea of the ZEISS for granted so ... no SONY at the wide end ? I'm looking for the ZEISS also but I would definitely buy a 20mm from SONY at the same 16mm price range. What about you ? I like the quality on my 16mm, not to speak about the portability ...
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Miguel Teotónio