The Handbook has been updated (since V2.28-1).
A crash in SmithForm when the RHS transformation matrix alone is requested has been fixed. Reported by E. Costa.
ExteriorPower(A, 0) now returns a 1x1 matrix. Issue reported by E. Rains.
Fixed a serialization bug when the same multivariate polynomial ring (or ideal) appears more than once in the object to be serialized or transmitted. The resulting serialization stream is invalid and the object is unable to be retrieved. Reported by L. Finotti.