Now that Disney's biennial fan event and expo D23 has wrapped up, fans all over the world have a better idea about just what's coming to the new streaming subscription service Disney+ when it launches this fall. Some of those fans (sorry, U.S. residents only) can now take advantage of an early discount offer for Disney+ membership (sorry again, D23 members only). If you're reading this from outside the U.S., you have my sympathy. But if you're a U.S. resident who's interested in the streaming service--and its library of Walt Disney …