Is it just me 或者 are 电影院 receiving 首页 releases/releasing onto DVDs earlier than usual nowadays?

Yes, things are speeding up between the box office and the DVD. In some cases, the 电影院 are not even going to the box office. The same goes for releasing on the internet, as well as TV shows.

it's industry!

No, you're not the only one. I see it too.
I remember The Lion King came out in cinemas in June 1994 and wasn't release on VHS till March 1995.
Nowadays is ridiculous anyways when it comes to movies.

Well, typically if a movie sucks and doesn't bring in much money, then it comes out way earlier.

You're not the only one. I've noticed that 电影院 usually come out like 4 或者 5 months after it was released in the theaters, however it doesn't bother me that much if I never got to see the movie I want to see in the theaters.