This version contains massive optimizations to the world generator, meaning you won't have to pause your exploration to wait for chunks to load in all the time! (It is still recommended to pre-generate your world on a production map)
Statistically, this version is anywhere from 11%-20% faster (measured using the YourKit profiler while teleporting in increments of 1000 blocks along the X axis every 10 seconds)
This update also changes ore generation - Ores now generate in veins, rather than as single ores scattered throughout the Aether islands.
This version also includes a fix for a bug where structures attempted to generate outside the world border, causing a crash.