Google keeps improving Gmail, and it's once again time to graduate some of the Gmail Lab features to "regular use", and also drops the unneeded ones.
So, say goodbye to the Google Search Lab Box - you can do web searches from the Gmail page already - and say hello to the newcomers:
Why stick to a single golden star when you can use different stars and symbols to better manage your emails? Choose you star set from your Gmail settings.
Advanced IMAP Controls
For everyone accessing Gmail via IMAP service, you now get a lot more control over how things get done. You can limit the number and size of synced emails, as well choose to sync just some labels. The control is yours.