Version 12.6.2 is now available for both commercial users and Academic Initiative members. You can find the documentation of IBM ILOG CPLEX Optimization Studio in the Knowledge Center. Start with the Release Notes to learn about new features and changes. Downloads are available via the Passport Advantage or Academic Initiative sites.
On the CPO side, changes include:
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Performance improvements on Failure-directed search and Presolve
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New debugging feature that explains failures during search
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New expression for counting the number of different values in an array
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New feature for producing warnings about model constructs
You can read the official letter and this blog entry for more information.
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