The full ChessBase news article is here.
I had the privilege of playing in a simul at a National Open tournament with GM Browne; the game has pride of place as Annotated Game #1 on this blog. He was an exciting part of the U.S. chess scene for a long time, including the Fischer era. He continued playing at a high level and with great energy through this year's National Open, being both combative and dedicated to the game while remaining a gentleman at the board. His games, at least, will live on.