How is the 16-50 kit lens with NEX-5(N) and NEX-7 ?

I've searched for this and if I've missed it, I apologise.

People are starting to receive their new 5R's and 6's together with the new 16-50 kit lens.

My question is whether they have tried them on the 'legacy' 5N and 7 bodies?

There are suggestions that Sony have abandoned optical correction for this lens and are relying upon in-camera correction.  Whilst this works for jpegs, anyone shooting RAW and using say Lightroom will have to sort the inbuilt distortions themselves.

I have a 16-50 on pre-order with the option not to complete the deal, so would appreciate some input.

Probably more imminent is the new wide angle zoom, also on pre-order.  If Sony have adopted the same approach to the SEL10-18 it will be very disappointing given the high price.

Doe anyone have any experience/input?

Thanks

--
Laurie