iGoogle has been discontinued, it's time for My Google. It's not clear what's behind this new service or if it will ever be released, but one thing it's clear: a Chromium bug report from a Google employee included a few links to some articles from Google's help centers. One of the links is: https://support.google.com/mygoogle/answer/3151281?hl=en&ref_topic=3148584 and there's a reference to "MyGoogle".
Clicking the link sends you to a 403 error page: "Your client does not have permission to get URL from this server". You get a 404 error page if the page doesn't exist, so this is different.
It's likely that the My Google help center is only available for Google employees, since the service hasn't been released yet. The Chromium bug report included links to the following Google help centers: MyGoogle, Google+, Google Maps, Google Search and YouTube, so the new service could be important.
"My" suggests that you'll be able to personalize Google. iGoogle, My Yahoo, My MSN focused on personalized homepages, but Google moved away from this model and started to focus on pushing content when it's likely to be useful (Google Now).
Maybe it's about Google Now, maybe it's another attempt at personalizing search results, maybe it's a way to manage preferences for all Google services. What's your take?
Update: Will Norris, from Google, says that it's "nothing quite that exciting. Just internal HR stuff."
{ Thanks, Florian K. }