Eigen 3.3-rc1 has been released on September 22, 2016.
If everything goes well, this release candidate should be last milestone before we release Eigen 3.3 next week.
Since 3.3-beta2, this release introduces a few new features including eigenvectors in GeneralizedEigenSolver, SparseMatrix::coeffs(), improved supports for custom nullary functors and custom complex types. This release also contains numerous fixes of all kinds and some documentation improvements.