Interestingly, the Post's existing digital experimentation shop, WaPo Labs (
http://www.wapolabs.com/), is specifically mentioned in the Post's official statement as one of the assets that is
not included in the sale.
Update: Slashdot founder Rob "CmdrTaco" Malda (who was hired by WaPo Labs last year) confirms on Google+ that he and his team aren't going with the paper: https://plus.google.com/+CmdrTaco/posts/1V2ZpbjcgbB