Folders for Google docs; soon to be released in Gmail?

Interesting post from techcrunch.
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Google has announced an update to Google Docs and Spreadsheets that includes improved features and support for folders. Folders are the biggest change. Google has not abandoned tagging and yet the inclusion of folders would indicate that Google is finally listening to the millions of people who prefer folders in preference to tagging.

The question I do have is what about Gmail? Without hopefully causing a flurry of people telling me how wonderful tagging is, I’m one of those people who download my email from Gmail into a desktop based email client, and I do so only due to the lack of folders in Gmail. Hopefully the inclusion of folders in Google Docs is a sign of future functionality in Gmail.