Last week we did some testing on usertesting.com
that revealed a major
discoverability problem with the UI that used the W as the Main Menu button.
We also tested a new approach that used the W as an emblem within the
search field and used a recognizable Main Menu icon. The Action Bar icon is
still not unambiguous so we will keep working on that one.
You can take a look here:
We are moving ahead with the new button approach and will have a version on
the beta site soon.
Phil Inje Chang
Product Manager, Mobile
415-882-7982 x 6810