Office 365 tenants with First Release enabled are beginning to see the new Outlook on the Web features, while the remaining tenants will see the updates beginning in early September. Outlook.com users who have been migrated to Office 365 have the new Outlook on the Web features now.
As a first order of business Outlook Web App was renamed Outlook on the Web. If you don't like it, you can provide feedback in UserVoice. I'm just kidding about leaving feedback on the new name, but they would like your feedback and feature suggestions, and votes for the ideas you like the best. To access the OW user voice (after your account is updated), click Feedback under the gear icon or use this link: Outlook on the Web UserVoice.
The new Action toolbar is a quick access toolbar for the most common commands you'll use, including new commands such as Pin, which allows you to pin important messages to the top of your Inbox or other mail folders so you can find them easily.
To pin a message, hover over the message and click the pin icon. Click the pin icon again to unpin it.
The new Sweep feature is based on simple rules and allows you to move or delete messages from a specific sender after they arrive or after a period of time. At this time the rules are limited to Archive or Delete all messages from a sender, all current and future messages, messages older than 10 days, or keep the current message and move or delete all older messages. The Archive button provides a way to quickly file messages you're finished with into the Archive folder.
Before using Sweep to archive messages, you'll need to set up an archive folder. Simply click Archive and select the folder you want to Archive mail to.
OW has two improvements to the single line view for users who prefer a single line list of messages instead of the compact view with the reading pane on the right.
Once your tenant is updated, you'll be able to apply actions to multiple messages. This works the same way it does on mobile devices: add a check next to the messages and move or delete the selected messages. You can even select the messages visible onscreen in one click. Yes, you can select multiple messages now, but it works better in the new OW.
New features in compose messages includes the ability to resize images, add custom borders, apply shadow effects, and rotate images. You can even insert emojis into your messages easily.
When you click the To, CC, or BCC field, you'll see a list of the people and contact groups you email the most, before you start typing a name. As in Outlook desktop, typing in the field displays matching contacts. (Click the To, CC, or BBC button to view your address book.)
Calendar updates include a 5-day forecast (for up to 5 locations), with icons indicating the forecast. When you hover over the icon, a popup shows a more detailed forecast.
You can add charms to appointments so you can see at a glance what type of event it is. Separate birthday and holiday calendars are also available.