How do I get the token for a date field type to display as a custom format?
A date may be a range, therefore [node:field_date] cannot be considered as a date token. Install Entity API and enable the module "Entity tokens" to get access to the actual date value,
Beware that for an obscure reason Entity token replace the underscore ([node:field_date...) of the original tokens name by a dash ([field-date...), you will then have access to a properly formatted date (in my case "[node:field-date:value:custom:Ym]", in the original question I guess therefore "[node:field-fact-sheet-date:value:custom:F,Y]")