I just got this message:-

We are pleased to announce the official release of Q-Chem 4.0.  Q-Chem 4.0 represents the latest development in quantum chemistry methodology and includes:

• Dispersion-corrected and double hybrid DFT functionals;
• Faster algorithms for DFT, HF and coupled-cluster calculations;
• Structures and vibrations of excited states with TD-DFT;
• Methods for mapping complicated potential energy surfaces;
• Efficient valence space models for strong correlation;
• More choices for excited states, solvation and charge-transfer;
• Effective Fragment Potential and QM/MM for large systems;
• Shared-memory for multicores and implementations for GPU's.

A complete list of the new features can be found at the our website: http://www.q-chem.com.