Ios 7 is the latest ios. Ios 7 is available on the fifth generation iPods, recent iPads and iPhones 4 and 5.
Yes, we are up to iOS 7 beta 4 so far and this beta is available to iOS developers.
iOS 7 isn't available on 4th gen iPod Touch
yes
Yes. Roblox is available on the iPad 2+, iPhone 4+ and the 5th generation iPod Touch, as long as they are running iOS 6 and above.
No
iOS 4 is the name of the iPad operating system (iOS) and the version (4)
IOS 4.2.1 Available for update March 11 2011: IOS 4.3
I use 4xWatch which is a metatrader connection monitoring tool that performs several connection diagnostics and monitors you connection and your broker's 24/7. Its been very helpful for me in troubleshooting connection issues. Its available at: Link
Forex offers three main tools packages: the FOREXTrader Pro (Forex's own proprietary tool kit) available as a desktop or as a mobile app, MetaTrader 4, and GTX - Forex ECN.
There are a number of Klondike Solitaire apps available for the iOS devices. To find Klondike Solitaire apps or other games for iOS, visit the iTunes app store.
The iPhone 4 can only support from iOS 4.0 to iOS 7.1.2. There is no way to get any higher iOS Firmware due to the older hardware that is built into the iPhone 4.