Google Branded Firefox
Here is some interesting speculation about a Google branded Firefox:
Again - this is all speculation.
The overlap is looking like a Google branded and customized Firefox based browser. To help set it apart from the rest of the browser crowd, they're integrating a lot of their own technologies. Since Firefox does not contain a mail app, they're integrating Gmail for email access, with a built in new-mail notifier. Interestingly, mailto: urls will work with Gmail, allowing peple to click email links in pages and have Gmail open a new mail to that address, as well as IE-like buttons on the toolbar for composing new mail from scratch.
Newsgroups will be built in similar to Gmail with the Google Groups service, and possibly the ability to select groups to watch, like in a full fledged newsreader (like Mozilla Thunderbird). And Google News will also have built in access from the browser along with Google Alerts or a similar, RSS-based feature.