0.15.1 alpha build 1 - MCPE: Recent & Upcoming PE Updates

Anyone else here received this update? I can't find any information on it anywhere. I assume it's a continuation on the 0.15.0 beta program.

Download MCPE 0.15.1 Alpha Build 2

Download Minecraft PE 0.15.1 Build 1 for Android

Minecraft PE 0.15.0 Alpha Build 3 (Bug Fix) APK

0.15.1 alpha build 1 - MCPE: Recent & Upcoming PE Updates

Pocket Edition v0.14.0 alpha build 1 – Minecraft Wiki

MCPE 0.16.0 alpha build 1 gameplay

Pocket Edition v0.15.0 alpha – Minecraft Wiki

MCPE-14117] 0.17.1 until 1.0.0 alpha/0.16.0B1'2'3 /0.16.1/0.15.9

Download Minecraft PE 0.15.0 Beta 1 for Android