Publishing with Amazon Redshift in DirectQuery mode

Hi,

I am using the beta Redshift connection in PBI Desktop.  If I use DirectQuery mode, the Publish button is grayed out.  In Import mode, I can publish to PBI Service (can't refresh but that is another story).  

Is this just a limitation of the beta version?  Will I be able to publish with DirectQuery once the full version is released?

Thanks,

Margaret