According to Entertainment Weekly, John Wesley Shipp will reprise his role as the Golden Age Jay Garrick from The Flash in Season 2 of The CW's Stargirl. Shipp will appear in the season's ninth episode.
I remember Barry mentioning that he couldn't find his parents' graves after Crisis and there were like two possibilities which were the graves were in another area or that Jay and his wife took over in this new earth, since they were Barry's parents' dobblegangers. The latter kinda makes you wonder how Barry will react to this, despite this being beyond anyone's control, including the Garricks.
Hope that this means some more of the JSA will reappear!