  We present the first official release of the nCTEQ nuclear parton
distribution functions with errors. The main addition to the previous nCTEQ
PDFs is the introduction of PDF uncertainties based on the Hessian method.
Another important addition is the inclusion of pion production data from RHIC
that give us a handle on constraining the gluon PDF. This contribution
summarizes our results from arXiv:1509.00792 and concentrates on the comparison
with other groups providing nuclear parton distributions.
