This has been rumored, but keep in mind, the actual headline is:
"Bruno Senna replaces Nick Heidfeld at Renault, says Eddie Jordan"
No official announcement yet from Renault. More info on the deal here: http://www.autosport.com/news/report.php/id/93888
BBC pundit Eddie Jordan, who has close links to Heidfeld after he drove for his team in F1, reported on Monday night that the deal was in place for Senna to take Heidfeld's seat for the remainder of the season.
However, AUTOSPORT understands that the plans are complicated by the fact that Heidfeld is not willing to simply walk away - with the German aware that there are few opportunities elsewhere for him in F1 if he leaves Renault now.
It is understood that negotiations are ongoing between Heidfeld and Renault about the situation, with the matter possibly only being resolved on the eve of the Belgian event itself.