He is the future of course his jersey will be retired, but as some other posters said there will be too many jerseys hanging up there, it seems Spurs retired some jerseys as a ¨friendly compliment¨ and now they have 7 jerseys, add to that the big 3 and you have 10.
They should add Patty´s jersey and call it quits, or unretire some useless names (Silas, Moore, Johnson).