I'm currently working on my project which is 'Aerodynamic Analysis and design of airfoils for wind turbines. I'd really appreciate if anyone could help me with finding new airfoils.
New airfoils are probably more efficient that the 90s ones. And because of development costs, they are probably property of the developer. Don't expect to find them free of charge in the public domain. Good luck for your search.
Ask yourself whether you really need "new" airfoils.
Check what the impact of airfoil properties on a wind turbine's performance is, and you'll probably be surprised.
I did so for propellers/ rotors and the results are striking - it has a very small to negligible influence. This relates to reasonable airfoils of course.
I assume this is also the case for a wind turbine.
My best recommendation is to use the available airfoils choosing the best of them. Trying to improve these will gain a small advantage for the 2-D characteristics and almost none for the wind turbine.
The new aerofoils are proprietary of the wind turbine manufacturers. Some research from TU Delft use fairly generic one (typically with 18% thickness).
Also, DTU I think proposed some open source aerofoil geometries (see for example https://backend.orbit.dtu.dk/ws/portalfiles/portal/7728949/ris_r_1280.pdf)
Standard NACA airfoils can be usually be selected based on the design requirements of aircrafts and wind turbines. It also depends on type and scale of wind turbine. e.g. horizontal /vertical axis turbines or whether it's intended for small or utility scale large wind turbines.
Few special type of airfoils are also available such as from NREL, TUDelft and DTU databases are quite useful especially for wind turbine blade design.