I am sure you all check out Sony rumors from time to time.
Today they have some samples from the FE 28mm.
Worldwide very first image samples taken with the Sony FE 28mm f/2.0 lens! | sonyalpharumors
I am looking forward to seeing how good the 21mm equiv adapter works on the 28mm. It might finally be a solution for those of us looking for that 21/20.
The 28 with 21 adapter paired with the FE55 or a Loxia 50 would make a good basic travel kit for me.