  Based on the direct linearisation framework of the discrete
Kadomtsev-Petviashvili-type equations presented in [Proc. R. Soc. A, 473 (2017)
20160915], six novel nonautonomous differential-difference equations are
established, including three in the AKP class, two in the BKP class and one in
the CKP class. In particular, one in the BKP class and the one in the CKP class
are both in (2+2)-dimensional form. All the six models are integrable in the
sense of having the same linear integral equation representations as those of
their associated discrete Kadomtsev-Petviashvili-type equations, which
guarantees the existence of soliton-type solutions and the multi-dimensional
consistency of these new equations from the viewpoint of the direct
linearisation.
