On my Touch Bar Mac with yesterdays update installed, when I click on either the To or CC field (and only these two fields) the Touch Bar shows the emoji icon directly to the right of the Esc. Then on the far right of the Touch Bar next to the Screen Brightness is the <keyboard that does the word fill in. Both of these are totally useless in those two fields since you only are going to be entering an email address or part of a name to before clicking on the Check Names toolbar icon. The Subject field loses the emoji icon, keeps the <keyboard and in the message body the Touch Bar is empty other than Esc and Screen Brightness, Volume and Siri. Outlook is the application I use the most in Office so I'm looking forward to a future update so it matches Apple Mail & Calendar.