Minecraft - Minecraft - Pocket Edition was just updated to 0.8.0. Go get on App Store, Google Play (and soon ). Minecarts! :) Read full release notes here

Minecraft – Apps on Google Play

Minecraft: Pocket Edition 0.8.0 update to bring Walls, Redstone, Minecarts, Pumpkins and more - Droid Gamers

Minecraft 1.7.5

Pocket Edition v0.8.2 alpha – Minecraft Wiki

Updates tagged with 'Minecraft' (page 2)

Solors

Scaffolding – Minecraft Wiki

Minecraft Pocket Edition 0.8.0 Full Update Review - All Features - Gameplay

Minecraft - Pocket Edition 0.9.0 Now Available on Android

Minecraft Wiki talk:Community portal/Archive 32 – Minecraft Wiki

Third-person view – Minecraft Wiki

Minecraft: Pocket Edition 0.8.0 update now live - Minecart, Rails and a ton of other stuff - Droid Gamers

0.8.0 Beta - What You Need To Know - iOS and Android - Testing Group - Minecraft Pocket Edition

How can Minecraft worlds be so big if the game file size is relatively small? - Quora