Back in 2014, the NFL and the NFLPA agreed to change the practice squad rules by increasing the size of the squad from 8 to 10 players and also allowing 2 of those players to be "semi-veterans," meaning they could have 2 accrued seasons under their belt and still be on the squad. Those amendments were in effect for a two-year period from 2014-2015.
According to Mark Dominik of ESPN, the NFL and the NFLPA have reached another two-year agreement to have the practice squad capacity remain at 10 players. In addition, they approved an increase to the number of semi-veteran players who are allowed on the squad:
In the event that players like CB Pierre Desir, WR Taylor Gabriel, or RB Glenn Winston get cut, the increase from 2 to 4 players would allow the players to remain with the club in some capacity, if the players and coaching staff so desired. A more likely utilization would be for a coach to bring in a semi-veteran player from a different club, though, so you can then evaluate a player to see if you've found a gem vs. one who couldn't make your own roster after seeing them through training camp.