Microsoft confirms Boss Update for Minecraft Pocket Edition drops on October 18, includes Add-Ons

Another important aspect mentioned by Mojang is the fact the along with the Boss Update, Minecraft players will also see the first implementation of Add-Ons. As the developers put it, “Add-Ons are the first step on our journey towards bringing even greater levels of customisation to all editions of Minecraft - starting with Pocket and Windows 10.”
Two Add-Ons will soon be available for download for those who want a taste of what's to come: Alien Invasion and Castle Siege. More Add-Ons will be added in the coming weeks, so the Boss Update might come with more then the two that have already been announced.
The Elder Guardian will arrive as well, along with the Wither, which will appear in revamped fighting form. Naturally, many tweaks and under the hood improvements will be implemented too.
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