Q: how come there is no new update for my ipod touch i have been at 2.2.1 for 2 years

I suspect yo have a 1G iPod

Connect the iPod to your computer and update via iTunes as far as your iPod model allows

iOS: How to update your iPhone, iPad, or iPod touch

A 1G iPod can go to iOS 2.2 via iTunes and iOS 3.1.3 via

Purchasing iOS 3.1 Software Update for iPod touch (1st generation)       

https://buy.itunes.apple.com/WebObjects/MZFinance.woa/wa/touchLegacyLandingPage

A 2G to 4.2.1. Requires iTunes version 10.X. If a Mac it requires OSX 10.5.8 or later. With OSX 10.4.11 you can only go to iTunes 9.X which gets you as high as iOS 4.1

A 3G to 5.1.1  Requires iTunes version 10.5 or later

A 4G to 6  Requires iTunes version 10.7 or later. For a Mac, that requires a Mac with OSX 10.6.8 or later

Identifying iPod models

I'm guessing you have a 1st generation iPod.

iOS 3.1.3 is the latest version for that model, and is a paid upgrade ($4.95).

http://support.apple.com/kb/HT2052

See the chart below to determine whether you can upgrade your device and what you can upgrade to. If you do not have a Software Update option present on your iDevice, then you are trying to upgrade to iOS 5 or higher. You will have to connect your device to your computer and open iTunes in order to upgrade.

IPhone, iPod Touch, and iPad iOS Compatibility Chart

     Device                                       iOS Verson

iPhone 1                                      iOS 3.1.3

iPhone 3G                                   iOS 4.2.1

iPhone 3GS                                 iOS 6.1.x

iPhone 4                                      iOS 6.1.x

iPhone 4S                                    iOS 6.1.x

iPhone 5                                      iOS 6.1.x

-------------------------------------------------------

iPod Touch 1                               iOS 3.1.3

iPod Touch 2                               iOS 4.2.1

iPod Touch 3                               iOS 5.1.1

iPod Touch 4                               iOS 6.1.x

iPod Touch 5                               iOS 6.1.x

-------------------------------------------------------

iPad 1                                          iOS 5.1.1

iPad 2                                          iOS 6.1.x

iPad 3                                          iOS 6.1.x

iPad 4                                          iOS 6.1.x

iPad Mini                                     iOS 6.1.x

=====================================

Select the method most appropriate for your situation.

Upgrading iOS

   1. How to update your iPhone, iPad, or iPod Touch

   2. iPhone Support

   3. iPod Touch Support

   4. iPad Support

     a. Updating Your iOS to Version 6.0.x from iOS 5

          Tap Settings > General > Software Update

     If an update is available there will be an active Update button. If you are current,

     then you will see a gray screen with a message saying your are up to date.

     b. If you are still using iOS 4 — Updating your device to iOS 5 or later.

     c. Resolving update problems

        1. iOS - Unable to update or restore

        2. iOS- Resolving update and restore alert messages

iOS 3 is a paid upgrade. See Update iPod Touch 3.1 Firmware For Free How to Update iPod Touch ....