Hi, sherr!
They do now have early admission again. Can't remember for sure, but I think they call it something like "Extra Magic Hour." The way I remember which day is the early entry park is to start with Sunday and remember the acronym "MADE MAD." Magic Kingdom on Sunday, Animal Kingdom on Monday, Disney Studios on Tuesday, Epcot on Wednesday, Magic Kingdom again on Thursday, Animal Kingdom on Friday and finally Disney Studios on Saturday.
Hope that helps!
(Not that I've ever made it to an early entry park in my life(smile), but I do like to visit the park that just had early entry the day before).