A quick update to my last post: the new Sony RX100M3 camera is rumored to be announced on Thursday next week (May 1). The third RX100 model will have a pop-up built-in EVF and a new 28-100mm f/1.8-2.8 lens (see patent here) - this will be a huge improvement over the current RX100 II model (with 28–100 mm f/1.8-4.9 lens and no EVF).
There is also the possibility of a new Sony A77M2 camera to also be announced next week.