Apple’s Let’s Rock event has finished and Steve Jobs did not disappoint in announcing new revamps in its mammoth bestseller iPod line.

The announcements have been across the board with all of the iPod products. First is that the iPod Classic now has just a single model, the 120GB. The new model though is much slender from its previous incarnation.

The biggest change is in the iPod Nano line, which gets a radical new form factor. The speculations about the Nano have been largely spot-on. It’s now rectangular with a portrait screen. It can also detect when the player is titled allowing people to view movies from a widescreen viewing ratio. The Nano also incorporate the new Genius feature that was introduced in iTunes 8. This allows for making playlists on the fly. Oh, and voice recording is now a standard feature for the Nano, which makes it so useful for students who want to record their teacher’s lectures.

The iPod Touch also gets some new features like the aforementioned Genius playlist, built-in speakers, new built-in apps and Nike Plus support. I was hoping for capacity upgrades to the Touch line but, sadly, this did not happen.

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The most persistent rumor are revamped iPod models. Details are sketchy about any new features or improvements to the line but one thing is certain, the actual look will change.

Already, there are a lot of purported pictures and drawings about the redesigns with the iPod Nano being the most frequent example given. Based on both concept drawings and (gasp!) leaked accessories pictures, the new Nano will be rectangular in shape and will have a portrait screen. It actually looks quite similar to the new generation Microsoft Zune.

I myself am looking forward to any news about the iPod Touch. I’m itching for an upgrade to my old fifth-gen iPod and I want to consider the Touch, but only if it bumps up the storage capacity to 60gb or more.