Edit: newer news confirms there will be no redstone in 0.11.0
Byteandahalf’s been slowly coding a highly complicated mod for Android and iOS to add redstone, one of the most requested features, to Minecraft PE.
What’s more interesting, is that he’s talked to the developers to get it put into the actual vanilla game! Currently 12Bit won’t share any further details, but it’s quite possible this will be in 0.11.0 given the current information available.
Please note, this is only speculation and is no way confirmed as of yet.