As spotted by Retro Dodo, leaker NNITRX – who has a pretty solid track record in this field – has shown off designs of a new handheld that boasts a sliding 960 x 720 display, with a secondary 640 x 480 display underneath.
That setup means this device would be ideal for Nintendo DS emulation, giving it a wide remit when compared to rival emulation handhelds, which usually only have a single screen (the AYANEO Flip DS being a notable exception, but that's very expensive). As well as running DS games, you'd also expect to be able to play SNES, NES, Mega Drive, PS1, N64 and many more systems on this thing.
As Retro Dodo are keen to stress, this leak should be taken with a huge pinch of salt, at least until we see some prototype photos. Anbernic hasn't confirmed anything, although its prolific production rate means there's a good chance we could see this particular device become a reality.