The calendar is great to look ahead at releases and finding hotspot of delivery/shipping and impact to the customer base. To help with planning having specific metrics show up in the calendar item or at least a flyover box would helpful for decision making.
Example, there are releases that just can not move due to regulatory issues. Have flag releases of this type with a custom field. It would be helpful to see that during annual planning.
Just launched! — Enhanced Calendar
We just improved the calendar. You can now customize your calendar cards for releases and other records. Go to Releases > Calendars, add a release calendar, and then click on the settings icon to customize cards displayed on the calendar. You can then drag fields onto the example card, such as a custom field you created, so that it displays on the calendar cards.
See how you can use the calendar to visualize your work.