Firstly, the screenshot above was tweeted a few days ago from Tommaso (the newest Mojang developer, working on Minecraft PE right now). The screenshot shows off glowing spider eyes, the moon, and stars. All of these are new features. Additionally double chests, sunrise/sunset, possible new inventory management, and other minor features like changed settings.
Also, Tom re-addressed the issue of Redstone in Minecraft Pocket Edition. Replying to a Twitter question about when Redstone would be added, he stated "Redstone is very complicated and will probably need an update or two so that we can be sure it behaves like PC." So there you have it, it's not coming in 0.7.3, 0.8.0, or probably 0.9.0.
That's the roundup for Pocket Edition, remember to check back for more news :)