Also, a possible Multi Interface Shoe, with a Microphone Input via the ECM-XYST1M,
Atleast according to the specs here:
http://www.sonyalpharumors.com/sr5-rx100miii-priced-at-899-canadiad-us-dollars-full-specs-leaked/
What that I find wierd about it is that in the pictures there appears to be no room for a shoe mount..
http://www.sonyalpharumors.com/sr5-hot-first-rx100m3-images-leaked/
guess we'll wait a little more to find out.