Did you know you could re-arrange the tabs in Revit? I didn't either until today! Sometimes with new releases or updates of Revit, Autodesk will re-arrange the tabs to try to make your workflow more 'efficient'. (Althought I would suggest working with the new arrangement for a little while to see if it does if fact make you more efficient, that is after you learn the new position of your favorite commands).
To move the tab, press <Ctrl> and then click and hold on the tab you want to move, then drag it laterally to its new position! Simple but cool!