Microsoft Office 2019

Microsoft Office 2019 Professional Plus
Microsoft Access 2019
Microsoft Excel 2019
Microsoft OneNote 2019
Microsoft Outlook 2019
Microsoft PowerPoint 2019
Microsoft Publisher 2019
Microsoft Word 2019
Skype for business 2019
OneDrive for business
OneDrive
Microsoft Visio Professional 2019
Microsoft Proect Professional 2019
Word

Black theme
Office sounds
Learning tools captions and audio descriptions
Text-to-speech
Improved inking functionality
Accessibility improvements
Excel

Funnel charts and 2-D maps
New Excel functions and connectors
Publish Excel to PowerBI
PowerPivot enhancements
PowerQuery enhancements
PowerPoint

Zoom capabilities for ordering of slides within presentations
Morph transition feature
Insert and manage Icons, SVG and 3-D models
Improved roaming pencil case
Outlook

Updated contact cards [Ed.’s note: This feature requires an Exchange Online account.]
Office 365 Groups
@mentions
Focused inbox
Travel and delivery summary cards
At any rate, Word, Excel, PowerPoint and Outlook are each getting four to six new features. In my opinion, these features seem comparatively minor and it would be hard to justify an update based on this feature list. In all fairness, though, it is entirely possible (even likely) that Microsoft has yet to release the full Office 2019 feature list.