Windows 10 has a Calendar app pre-installed out of the box. While Windows Vista and Windows 8 also had Calendar apps, they were not adopted by everyone. The Calendar app is useful for those who need just a basic calendar app without extra features and storing important events, appointments, holidays etc. A new update will make the app more colorful.
Microsoft has started rolling out an update for Outlook Mail and Calendar apps for Windows Insider Program fast ring members on Windows 10. The new update, version 17.8241.40785.0, contains the usual bug fixes and improvements but also introduces a meeting scheduling feature.