I'd noticed new icons for the elements in Google's Mobile services homepage yesterday but hadn't thought any more of it - it turns out that each element has had a new intro page written, explaining the difference between the download and web-based versions. As ever, try it at m.google.com - screenshots below.

Some of the pages are still a bit glitchy and if you follow the wrong path you end up back at the old version of the pages, but doubtless Google will sort this out during the day!