Initial update with note about WFI optical model

README.rst

@@ -28,9 +28,12 @@ imaging, coronagraphic, and spectroscopic modes.
 
 WebbPSF also supports simulating PSFs for the upcoming Nancy Grace Roman Space Telescope (formerly WFIRST),
 including its Wide Field Instrument and a preliminary version of the Coronagraph Instrument.
+> **_NOTE:_**  The current Roman WFI optical model was provided by
+Goddard Space Flight Center circa 2021 (the Cycle 9 reference data); a
+new optical model is currently being implemented in WebbPSF.
 
 Developed by Marshall Perrin, Joseph Long, Shannon Osborne, Robel Geda, Bradley Sappington, Marcio Meléndez, 
-Charles-Phillipe Lajoie, Jarron Leisenring, Neil Zimmerman, Keira Brooks, 
+Charles-Philippe Lajoie, Jarron Leisenring, Neil Zimmerman, Keira Brooks, 
 Justin Otor, Trey Kulp, Lauren Chambers, Alden Jurling, and collaborators, 2010-2024.
 
 Documentation can be found online at https://webbpsf.readthedocs.io