It looks like the biggest app update might go to the Google Earth iOS app due to reports that claim the new 3D maps feature Google demoed last month will roll out sometime today. Until then, below is our list of other apps and updates hitting the App Store:

Walking Dead: The Game: While Telltale has been teasing the iOS game for the hit TV series The Walking Dead, today we finally get our hands on the first “A New Day” episode available in the App Store for $4.99. The game requires iPad 2/iPhone 4 or later, and it will release episodes No. 2 through No. 5 via in-app purchases in the near future.

Angry Birds Space version 1.2.2: Both the iPhone and HD iPad versions of Rovio’s Angry Birds Space title were updated today with “the second half of Utopia.” It includes two new characters, 20 new levels, a “never-before-seen space egg,” and a “GIGANTIC” new boss fight.

SafePay version 1.2: Recently released on the App Store, SafePay is getting a lot of attention for its app designed to protect “cardholders and retailers against online payment fraud.” SafePay’s technology allows users to monitor transactions in real-time and verify purchases to protect against fraud—right from their iPhone. The company explained how the technology works:

Google Catalogs version 1.3.3: Google’s Catalogs iPad app received a small, but welcomed, update today. It brings the usual bug fixes and number of user interface improvements.

Dragon Remote Microphone version 1.1: Nuance’s Dragon Remote Microphone app for using your iPhone as a wireless mic with Dragon desktop software was updated today with support for iOS 5.1 as well as barcode support for Dragon NaturallySpeaking. Nuance also updated its Dragon Medical Mobile Recorder app that works with Nuance Healthcare solutions.

[youtube http://www.youtube.com/watch?v=11mDKBzTZwk&feature=youtu.be]

Epic Meal Time: The folks at Epic Meal Time recently partnered with Molecube to create their first iOS game that allows you to “Fling delicious unhealthy food at the Sauce Boss.” The app also features music from commodore 84 + A1 & 1UP and the Dub Cobra. If you are unfamiliar with the Epic Meal Time web series, the epic promo video above will give you a taste.

Yelp version 6.0.0: Yelp’s iOS app received a nice update today that brings a brand new business page to iPhone and a ton of iPad improvements. Full list of features below:

☆ We’re rolling out a brand new business page on iPhone! Boom. ☆ Support for Yelpy Insights — get the inside scoop on which businesses vegetarians love and which ones are popular for certain age groups ☆ Now you can compliment and like Tips on iPhone ☆ Updated navigation for logged out users on iPhone ☆ Tons o’ iPad Enhancements: Now you can edit business information; add photos; give Useful, Funny, Cool votes to reviews; and send Yelpers compliments for their great reviews.

Instagram version 2.5.1: Bug fixes, new Flickr authentication

Twitter for iPhone:

v 4.3.1 – Numerous accessibility improvements – Fixed crasher affecting some users when launching app – Fixed issue with ambient notifications becoming stuck when sending Tweets or Direct Messages – Fixed issue with layout of Connect tab