Apple is all set to launch its new versions of its iPod MP3 music players on Tuesday at a rocking event titled “Lets Rock” at San Francisco. On the other hand, Microsoft, its rival is focusing on its Zune devices to survive in the competition.

All the fans of Apple products, received an email of invitation last week, which read “Lets Rock”, and a colorful outline of a person who is excitingly listening to an iPod.

The other information included in the invitation email, was the time of the press conference and the way to the theatre where it will be held.

Analyst Rob Enderle of Enderle Group in Silicon Valley, informed, “The best bet is they are going to refresh the iPod Touch and the iPod Nano.”

The analysts are expecting that the company will raise iPod Touch technology to the level of the iconic California Company?s iPhones. All capabilities except for telephonic services will be provided in it.

Apple may convert the shape of its Nano models back to slim gum sticks. The design which was squat was initially designed by the company to include a small screen for video viewing will be dropped.

There are also rumors floating around that Apple may also announce anither software patch in order to fix connectivity problems related to its new iPhone 3G models.