I will provide an overview of current developments on new wave-front sensing techniques for NGSs and LGSs, advanced wave-front reconstruction, AO post-processing and how these are propelling the design of Harmoni, the European Extremely Large Telescope's 1st light IFU.
Links
[1] http://www.ctio.noao.edu/noao/content/Gemstone-Adaptive-Optics-Jewelry-be-Deployed-Next-Generation-Systems