This is one of QiYi's recently teased upcoming releases, it appears to perform similarly to a pyraminx although it does not look much like a pyraminx to me... I suspect it is essentially a mastermorphix pyraminx but it is difficult to know without trying it. Hopefully it won't be too long until it is released.
Don't think it is like a Mastermorphix cube, it actually plays close to the Pyramid.
Simple and easy to learn is the biggest feature of Corner Mastermorphix,it's recommended for those who are just starting to learn cubes.