Yes, the instant Nikon rebates have been extended in the US and will run again from June 6th – 26th, 2010 (the current program expires on May 29th – not sure if the rebates will be valid from May 29th – June 6th).
The only new addition will be the Nikon Coolpix S1000pj that will be on sale for around $299 after the rebate:
Also, new Nikon rebates program in Switzerland: the Nikon D700 is not part of the rebates this time (rebates will run from May 15th till July 31st, 2010).