For a very new member of the forum, it becomes confusing to see all posts with yellow labels as new items.
Ideally, only after his second login, we should show the new items.
This has already been changed in the develop branch. New behavior is email-style highlighting (lighter background, bold) for unread discussions. 'New' does not appear on a discussion until it's been viewed at least once by the user.
Oh, its great to know that new notification wont be displayed until user has seen the discussion atleast once.