Creating lightning record pages for the case object in our org as we migrate over to lightning - 

In the lightning now tour session, we learned about how the lightning app builder would let you call out fields from the page layout and bring them into their own component to place elsewhere on the page.  Is that functionality out in the Spring '19 beta or is it Summer '19?  

Example: Case Record Type with page layout that carries fields containing details about the car, customer issue, and more.

(Tab component with 4 sections:)

- Details

- Related

- Feed

- (Custom) "Car Details" 

  -  In this tab, we want to specifically call out just the car detail fields on the page layout and put them in this section.  I remember doing this in the lightning now tour workshop - just forgetting whether it is out now (and I'm forgetful on how to do that) or that functionality comes out in Summer '19.  Thoughts?