Thomas reported a delay in the release of MCPE 0.16.0

On October 18, 2016, a release for the new version of the game was scheduled in advance — Minecraft Pocket Edition 0.16.0. Unfortunately, this anticipated date did not mark the arrival of the full version of the game — MCPE 0.16.0. Tommaso explained on Twitter why there was a delay with Minecraft Pocket Edition 0.16.0.

We kind of messed up Creepers, so 0.16 won't come out today… we need a few days to fix bugs. Sorry!— Tommaso Checchi (@_tomcc) October 18, 2016

Issue with 0.16.0: The developers encountered some problems with creepers, leading to widespread issues. They require a few days to resolve these bugs.