So the active players so far on the list
Giannis, Durant, Harden, Paul
In addition to those 4, they've added 5 other guys: Duncan, Garnett, Iverson, Nash, Dirk
And since they've added 9 to the 50 here are the 9 that were on the top 50 team that haven't yet been announced: Elgin Baylor, Dave Bing, Billy Cunningham, Dave DeBusschere, Pete Maravich, Earl Monroe, Shaquille O'Neal, Dolph Schayes, Lenny Wilkens.
I will be interested to see if they keep all 9 of those guys and only add 16 more, or if they take some of the original 50 off the list (though Arizin seemed liked a target for that and he is still on it).
If they stick to 16 new people, there are like 10 that fairly obvious i.e. Lebron, Kobe, Wade, Kidd, Payton, Curry, Anthony, etc. but then it gets interesting as there are some players they didn't put on last time i.e. Dominique, Rodman, Reggie that will get some love in addition to a bunch of the modern players that have varying degrees of claims like Big Ben, Dwight, Russ, etc. I'm really curious to see what they do with the final 25.