Eigen 3.3-rc1 has been released today on September 22, 2016.
If everything goes well, this release candidate should be last milestone before the Eigen 3.3 release next week (hopefully).
The source archive is at:
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.
cheers,
Gael