Pentax and Nikon announcements soon, Sony will follow.
Just a quick note: Pentax and Nikon will announce their stuff within 24 hours (Their new DSLR cameras will use Sony sensors). Maybe at the time you read this they will always have had the announcement while I am asleep in my bed :)
Sony itself will have an announcement after those companies (still not sure about exact day and hour). Four new FE lenses and two converters coming. That’s it the only 100% sure thing for now.