Thank you for your question, included that area in a cycle tour on 13 December, note that specific area hasn't been landscaped yet, while the area around the two blocks to the south has been finished. 
It is common practice in the Antwerp area to plan, then fill the development as residents looking for a particular type of house or apartment come forward. 
In this instance, https://www.vooruitzicht.be/vastgoednieuws/40/heraanleg-eksterlaar have about a dozen projects at various stages of completion, rest assured they'll eventually build every block, but over a five or more year period. For the complete list of their projects please view https://www.vooruitzicht.be/nieuwbouwprojecten. 