Sony is way behind on updating their A-mount offering and APS-C mirrorless product. A new Sony A7s Mark III and Sony a6700 cameras are a possibility as well as some new E-mount mirrorless lenses (200-600mm, 24mm f/1.4 GM) but I have not received any reliable information yet.
Olympus may announce a new special edition camera or a lens for their Micro Four Thirds 10 years anniversary (2008-2018) or for the company's 100 year anniversary that is coming next year (October 12th, 1919). A major Olympus announcement is expected in 2019. Olympus 12mm f/1.2 PRO lens is still a possibility, but I have not received any reliable information yet.