Google has made a minor, yet noticeable change in their mobile Safari Gmail webapp. Previously, the site had a floating context toolbar that would disappear and reappear as you scrolled around. It wasn’t very ‘iOS-y’, and felt a bit awkward. Now, they have removed the floating toolbar altogether, and replaced it with two fixed toolbars at the top and bottom of the screen. You will loose about 30 pixels of viewable space, but it’s well worth it.
They have also improved the scrolling/flicking response, so it feels more like a native app.
You can see these improvements by visiting gmail.com from the browser of iPhone and iPod touch devices running iOS4 (English-only for now). And if you like Gmail in mobile Safari, make getting to it easier by tapping the “+” at the bottom of the screen and then “Add to Home Screen.” (Don’t see the new changes yet? Try clearing your cache and refreshing the page.)