Download Minecraft PE 188.8.131.52 for Android you can in this article. In this Update Mojang fixed many issues related to back-end and account sign in multiplayer. Unfortunately any new blocks or any new mobs were added. But I hope that developers will add something new in the next Update.
What were added in v.184.108.40.206
- back end fixes
- fix issues regarding sign in in multiplayer
Note that you can also help in finding bugs and report it to Mojang. Together we can fix a lot of bugs and issues and make Minecraft better. Oficial website where you can write to Mojang is below:
screenshots from new version