Olympus could likely announce the new camera in March, at the upcoming CP Plus show. But according to recent rumors, the camera is registered with the wireless certification agency under the code name IM008 and could be available as early as February

The Olympus E-PL8 now has a 16-megapixel sensor and shoots Full HD video. The upcoming E-PL9 is expected to have a 20MP sensor, 4K video recording and the retro design that many love.
Olympus EP-L9 Preview Specifications:
20-megapixel MOS sensor 3.0-inch Flip touch screen 4K video recording at 30 frames per second 5-axis image stabilization with sensor shift built-in Wi-Fi and Bluetooth support advanced FAST AF advanced modes and controls