The latest version of MRCC is released on May 28, 2015.
The important new features and changes are as follows.
1) Linear-scaling direct random-phase approximation (dRPA) and second-order Møller-Plesset (MP2) methods.
2) The three-center Coulomb integral code has been parallelized using the OpenMP technology.
3) Implementation of the RPAX2 method.
4) Improved SCF convergence.
5) A couple of bugs have been fixed and the manual has been improved.
It is recommended for every user to upgrade to this version.