Form Helper - Relational Fields

It seems in the code that there are going to be some options around relational fields for forms. Would someone be willing to briefly discuss what these options are going to be and planned timeframe for release? 

/**
* Build Form Helper
*
* @param mixed $value The value
* @param \IPS\cms\Records|NULL $record The record
* @param int $flags Bit flags
* @return \IPS\Helpers\Form\FormAbstract
*/
public function buildHelper( $value=NULL, \IPS\cms\Records $record = NULL, $flags=0 )
{
if ( $this->type == 'Relational' )
{
/ @todo something about this /
return;
}

Edited January 9, 201510 yr by mycota