The HTML5 specification defines several form fields that are still not supported by Symfony Forms. In Symfony 3.4 we implemented two of these new HTML5 form fields which have a good support in modern browsers: TelType (for telephone numbers) and ColorType (for color pickers).

New options for TimezoneType ¶

The TimezoneType defines two new options: input and regions . The input option defines the format that the timezone is stored in your underlying object. The value can be string (e.g. America/New_York ) and datetimezone (which returns a DateTimeZone object).