The version of Minecraft PE that will have both The End and The Ender Dragon is version 1.0. During development and beta testing it will be known as version 0.17.
While the presence of both The End and The Ender Dragon has been confirmed, a specific date for the release has not. Piecing together a few clues, what is clear is that Mojang’s current plan is to release 1.0 before the end of 2016.
What are we piecing together? First, in a November 11, 2016 blog post, Mojang announced the 1.0 release and a few features. In that same blog post they also noted that 1.0 would be the version released for Apple TV. The Apple event which spoke to Minecraft for Apple TV noted that it would be available “before the end of the year.”
After the release debacle Microsoft and Mojang weathered when releasing Minecraft PE for iOS several days after Windows 10 Edition and Pocket Edition for Android, they surely won’t go that route again. Unless something gets held up in development, expect Minecraft Pocket Edition and Windows 10 Edition before year’s end.