The first improvement is faster address auto-completion. This means that as you begin typing the first few letters of your friend or colleague's name or email address, Gmail for mobile will quickly display possible contacts. We sped up this process by reusing previously fetched matches in subsequent searches.
The second improvement is that we've enabled keyboard shortcuts for Android-powered devices with a physical keyboard. Now you can use all those familiar Gmail keyboard shortcuts to quickly move through your inbox. For example, if you're reading an email you can press 'u' to return to the inbox or 'n' to move to the next conversation.
To try out Gmail for mobile, visit gmail.com in your mobile browser. This version of Gmail for mobile supports iPhone/iPod Touch OS 2.2.1 or above, as well as all Android-powered devices, and is available for US English only. To make it easy to access your Gmail account, try creating a home screen link.