[Update]: Just an update in order to inform you that
Adobe launched Photoshop.com for Android. So Android users can now edit photos from their phone, as well as access their online photo collection on Photoshop.com. For more information, click
here. You can also watch
this video. Photoshop for Android can be found right now on the Android Marketplace. For the moment it is only available for people who live in United States and Canada.
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Adobe has recently published a video that shows new features which could be in the latest version of Photoshop.
Visibly Photoshop CS5 could have :

new brushes tools, more realistic and more dynamic, like Painter and in 3D.

a new interresting distorsion tool
We continue this article with
Photoshop Mobile for iPhone, a free application available on the App Store (for the moment available only for United States and Canada).
Photoshop Mobile is a simple and very lite version of Photoshop for iPhone that
allows you to retouch your photos on your phone or on the gallery of Photoshop.com, an online photo sharing, editing and hosting resource.
Photoshop Mobile offers the basic tools such as cropping, contrast, brightness, saturation, white balance, changes color...
Here two videos: