Well, we may get the chance to see some new products long before Photokina. And if we are lucky next week Olympus and Sony will announce new products:
They will announce the E-PL8 and the 30mm f/3.5 macro lens (Source: 43rumors).
It’s very unclear what could come from Sony. But they are rumored to announce “something” by end of the next week. This could be for a new RX100m5 and A5300 camera. (Source: SAR).
What else can we hope to get before Photokina? Well the Fuji X-T2 for sure (sometimes in July I guess). And maybe the Panasonic GH5?