We plan on adding date and time field types. The UI will need to be enhanced to allow these new types.
Note that schemas will be represented just like they are in avro, where date and time are simply the 'logical type' of an existing 'physical type'. (https://avro.apache.org/docs/1.8.1/spec.html#Logical+Types). For example, a 'Timestamp' field is not represented as:
But is represented as: