Switch to the new look by clicking on Switch to the new look in the bottom-right of Gmail (after login). The new look is now available to everyone.
Even if you do not switch , sometime later Google will switch you, so better switch now and get used to it
Noticed it before and very nice but the old one works perfect for me, especially when opening attached docs that is viewable as web page, not as Google docs.
I like the visualization of the new look - but I have to take some time until I get used to it,but as I said the new design rocks!
I have just switched to the new look. The new look looks impressive but needs some more changes. But for now it is better than the old one.
Most of the people are like old gmail. I'm still using the old version. It's a bit faster and also it's using the screen real estate much more efficiently - I can see more in the conversation snippet, and there are more conversations visible in the screen. I don't know if it's because of a smaller font or just because the conversation list is more compact in the old version, but the new version looks "sparse" to me.
The thing matters the most that you can access the Gmail very well, About the look I can say that some people like it very much and some don't..