Are Hyperkin developing a handheld Nintendo 64?

Third party peripheral-manufacturer Hyperkin has been developing controllers and retro console and now it seems they're working on a handheld Nintendo 64 device. This was "leaked" by an eager employee via Facebook and it looks like the functioning prototype is based on the shape of the N64-controller with an added 3-inch screen on top. Hyperkin-employee Ramon Navos-Moral writes the following on his Facebook page:

"I took a picture of an N64 handheld prototype at the R&D department not with the intentions of leaking it.. but they shouldn't trust me though. I just want them to hurry up. (Design is not final) I call it Social Media Pressure. They said it's #38 on their priority list.. they don't know what they're missing!!! N64 is life thoughhhh . It's either they trust me or I get fired. Good thing they forgot the NDA on this one. I guess theyre really busy."