Sony is going to announce the new 400mm f/2.8 FE today…

Today at 15:00 London time Sony will announce the final specs and pricing of their new 400mm f/2.8 FE lens. There should be no new camera announced today. But we might get a glimps about the future Sony 500 and 600mm lenses?

We know Sony did patent these lens designs along the new 400mm…so maybe…