graduation at google lab

Today i was creating a filter to sort some of my mails in gmail.While creating the filter,i found that gmail is offering to create a nested label automatically.


I was taken aback.After that ,came to know that 3 lab feature graduated  from google lab.So great news for users.
The graduated ones are
Superstars

You can now choose your own set of stars from Settings:



Once you’ve done that, the stars will rotate with each consecutive click on the star icon.

 Nested Labels

&

Advanced IMAP Controls