If you applied for financial aid, and/or scholarships, such schools will notify you of your awards once you have been accepted in accordance to their schedules. It can vary as to when any given school will release such packages. The packages should be presented before you have to make the commitment to attend. Otherwise, how would you know whether a school is financially possible for you.
Sometimes with early Action or Rolling Admissions, you may get the financial packages much later, such as when all of the later applicants are so notified. If you want to commit earlier, or want to see if you can move things along sooner, call the schools and see if they will let you know sooner.