The End is now available in 1.9 Pre4, I was surprised to find that you cant come back after going there XD But I guess thats why they call it The End! Even though the dragons don't spawn yet, The End is still AWESOME! So many Endermen, like at least 20 visible at all times:P Anyway, its pretty cool to go there if you've gotten bored on one of your saves. And if your having trouble finding a stronghold, just go to the coords: x:0 z:0 on any seed, and dig down until you find the stronghold. So I guess thats it, overall The End is a pretty cool place to visit!