Change SharePoint Online List Experience to New Experience from Classic

In order to change the Sharepoint Online Site List Experience to New Experience from Classic, follow the below steps,

• Step 1: Login to you SharePoint online tenent dashboard.
• Step 2: Navigate to your Site and Open the Task List.
• Step 3 Now on the ribbon select List.
• Step 4: Choose List Settings.
• Step 5: Click on Advanced Settings under General settings.
  
• Step 6: Now scroll at the bottom to the List experience
• Step 7: Choose New experience instead of Default experience for the site or Classic experience
  
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• Step 8: Click OK and navigate back to your list, you should see it is displayed with a new rich look and feel.