Sony currently has three new camera codes haven’t yet announced, according to Nokishita Camera, all these three cameras are E-mount mirrorless cameras. Now according to SAR, two cameras will be announced at the end of this month, and both are APS-C mirrorless cameras. The third camera will be a full frame mirrorless camera, to be announced in September/October, 2019.
One upcoming APS-C mirrorless camera will be Sony a6700, the successor of current a6500.
The other APS-C mirrorless camera is unknown yet, maybe the successor of a5100.