Two years ago, the NFL increased the number of available roster spots on each team's practice squad from 8 to 10. This year, they've made another change, increasing the number of players who can have two accrued seasons of NFL service time.
What comprises a season of accrued service, you ask? Here's your answer:
To have an accrued season, you have to be active for at least six regular-season games. A player can also go to the practice squad with an accrued season provided they were on the 45-man active roster for less than nine-regular season games.
In short, this change means your Houston Texans can now keep double the number of more "veteran" players on their practice squad than they could a year ago.