Unless you’ve been without a net connection in the past few days the widely disseminated rumor is that Safari v62 (current release is only v60) has tabs! It’s also supposed to have a forms auto-complete but no one seems to know how to get that to work. Supposedly both of these features are activated via the Debug menu.
If this is accurate, and I believe that it is ;), it’s great that Apple seems to be listening to all the user input. Far and away the most requested new features of Safari have been tabs and forms auto-complete.
If you follow David Hyatt’s blog there are also likely to be many bug fixes as well. I can’t wait for the official release of the next build.