Starting in 10th September Microsoft will start to delivery the new version of the Outlook on the Web.
Regarding this new feature you can “Try the new Outlook”.
Microsoft has sent to tenant admins the following information.
|Organization: NUNO SILVA|
|New feature: Opt-in toggle to try the early version of the new Outlook on the web|
|Major update: General Availability rollout started|
|Applied to: All Customers|
|We’re releasing an opt-in toggle for users to be able to try an early version of the new Outlook on the web as we gather feedback and keep improving the experience. Users can opt-in/out as often as they want.We’ll begin rolling out the opt-in toggle on September 10, 2018, to Targeted Release organizations initially and then to all Outlook on the web users.
[How does this affect me?]
You can learn more about the early version of the new Outlook on the web by clicking here.
For a list of features that won’t be available in the early version of the new Outlook on the web that’s releasing on September 10, 2018, please reference this post.
We’ll be gradually rolling out this toggle to Targeted Release organizations on September 10, 2018, and it will stay in Targeted Release for at least 30 days before we begin the rollout to remaining organizations. We anticipate rollout completion worldwide by January 1, 2019.
[What do I need to do to prepare for this change?]
|Sign in to the Office 365 Admin center to use the links below:|
|View this message in the Office 365 message center|
You can read more here https://techcommunity.microsoft.com/t5/Outlook-Blog/Designed-to-be-fast-The-Outlook-on-the-web-user-experience-gets/ba-p/234909