Change record status: 
Project: 
Introduced in branch: 
8.x
Description: 

D7

$render_array = array(
  '#theme' => 'aggregator_block_item',
  '#item' => $item,
);

D8

$render_array = array(
  '#type' => 'link',
  '#href' => $item->getLink(),
  '#title' => $item->label(),
);
Impacts: 
Module developers
Themers