[Every week, we sum up sister iPhone site FingerGaming's top news and reviews for Apple's nascent -- and increasingly exciting -- portable games platform, as written by editor in chief Danny Cowan and authors Louise Yang and Jonathan Glover.]

This week, FingerGaming highlights notable titles like Mecho Wars and Diabolika, and details the release of iPhone OS 3.0 and the debut of the upgraded iPhone 3GS hardware. Features for this week cover Light Wars and 2XL Supercross developer 2XL Games.

- iPhone OS 3.0 Now Available
"The update adds several features to the gaming capabilities of the iPhone and iPod Touch, particularly in terms of multiplayer options. Gamers and developers can expect improved peer-to-peer connectivity in the upgrade, along with the much-discussed possibility of downloadable content via microtransactions."

- Interview: Rick Baltman of 2XL Games
"Chatting with FingerGaming on the eve of Apple's newest iteration, the ex-Rainbow Studios engineer talked excitedly about 3.0, the 3G S and beamed with enthusiasm as he described porting their Baja: Edge of Control engine to the iPhone for 2XL Supercross."

- iPhone 3G S Debuts in North America and the UK
"The iPhone 3G S offers improved battery life, a faster processor that improves application load times and performance, and a variety of new hardware features, including a digital compass and an upgraded camera with video capture functionality."

- Sega of America CEO Simon Jeffery to Head New ngmoco Publishing Group
"Simon Jeffery, president and CEO of Sega of America, announced that he is leaving his position at the company in order to head up the newly established publishing arm of iPhone developer ngmoco."

- Derek Yu's Puzzler Diabolika Debuts on iPhone
"Indie dev Derek Yu has released his newest work, the iPhone turn-based puzzler Diabolika. Yu is the creator of the wonderful roguelike-inspired platformer Spelunky, along with other notable titles like Eternal Daughter and Aquaria."

- Top Free Game App Downloads for the Week
"Paper Toss takes top honors for the second week in a row, beating out the recently released Lite version of 2XL Supercross and newcomer Chase the Dot."

- Flick Fishing, Tap Tap Revenge 2 Update with New iPhone OS 3.0 Features
"It's been only a few hours since the iPhone OS 3.0 launched in North America, and already a number of popular apps have updated to take advantage of the firmware's new features."

- Review: Light Wars
"Light Wars is a worthy attempt at bringing Geometry Wars to the iPhone. It may take a few tries to get used to the control scheme, but once you become acclimated to it, it's easy to waste ten or twenty minutes at a time aiming for a higher score."

- Turn-Based Strategy Title Mecho Wars Out in App Store
"Mecho Wars will be instantly familiar to fans of Nintendo's Advance Wars series. Unlike many other titles in the RTS genre, however, Mecho Wars avoids the expected military-themed aesthetic in favor of a unique fantasy setting and a cast of animal-like creatures."

- Top-Selling Paid Game Apps for the Week
"PopCap's Peggle finishes at second place in App Store sales numbers this week, thanks to a weekend-long sale that dropped the title's price to 99 cents."