The tabs are now all lined up at the left of the screen, instead of across the top. This is quite alright if you have a wide screen, but for people like me who's got smaller resolutions, the screen real estate has really shrunk. Each widgets may now be "maximised" to fill up the whole content frame, like the Google Reader widget in the screenshot above.
My first impression: Whoa, it's like launching a new applications when you maximise these widgets, and something like a preview when you only expand them. Hmmmm... is Google going to make this into its own operating system? Y'know, do everything online, forget about installing OSes locally on your own machine and be tied to it?
UPDATE: iGoogle gives a tour of its new features.
