Well, we don’t know yet what the exact upcoming FE lens specs will be. The roadmap only says the next three will be a wide angle zoom from Zeiss, a fast prime from Zeiss and a Sony G macro lens. People over at Kakaku claim to have got “unofficial” words from Sony managers that these are the exact specs of the three lenses:
16-35mm f/4.0 Zeiss
35mm f/1.4 Zeiss
90mm Sony G macro
The lenses could be announced in Spring. All we know for sure is that Sony scheduled a new press release in late March. 4K cameras coming for sure but they could also announce some new FE lens too!