Donald Mustard, creative director for Epic Games subsidiary Chair Entertainment, recently let slip in an interview detailing Infinity Blade 2 that the iPhone 4S will sport 512 MB of RAM.
Given that a demo of Infinity Blade 2 was prepared for and unveiled as part of Apple's iPhone 4S keynote presentation last Tuesday, Mustard's comments are likely a result of first-hand knowledge of the iPhone 4S specifications, as Apple was reported to have provided select game developers with early versions of the iPhone 4S hardware for their development purposes.
Separately, a poster on a Chinese-language blog claims to have taken possession of the iPhone 4S, which he also says has 512MB of RAM. Both reports appear to confirm an AppleInsider article that first reported the information in early September.
With the move to Apple's A5 chip and dual-core graphics, the iPhone 4S's underpinnings now largely mirror that of the iPad 2, which also contains 512MB of RAM.
For the past two years, Apple has used the iPad to usher in a new mobile architecture before transferring those rights to a new iPhone. As such, iPad 3 stands to become the most likely iOS device to first receive an upgrade to 1GB of RAM when it hits the market early in the second quarter of 2012.