Version 12.6.2 of CPLEX Optimization Studio is now available for both commercial users and Academic Initiative members. On the CPLEX Optimizer side, changes include:

• Significant performance improvements on quadratic problems of type SOCP, MISOCP and nonconvex quadratic.
• New parameters for Boolean Quadric Cuts and CPU mask for binding threads to processors
• Objective offset in APIs and file formats

You can read the official letter and this blog entry for more information.  And you can find the Release Notes for CPLEX and the whole CPLEX Optimization Studio documentation online.