The only rumors I got about the new Olympus viewfinder technology talk about a sort of semitransparent OLED technology. It works with a fixed semitransparent layer on the optical viewfinder. You should be able to use both simultaneously or switch from full optical or full electronic.
The video on top shows a futuristic transparent OELD panel made by Samsung. As you know Olympus already uses the Samsung OLED technology for the Olympus E-P3 LCD screen. And sources also told us that Samsung offered Olympus a new Micro Four Thirds sensor. So it’s sounds possible that the partnership can extend to the new viewfinder technology.
I am collecting all rumros abotu that next camera. Feel free to send me bits of info at firstname.lastname@example.org or use the anonymous contact form on the right sidebar. Thanks!