http://www.autosport.com/news/report.php/id/72325
So, the teams have three choices:
1. Sign up to the standard FIA Cosworth
2. Build their own engine identical to the FIA Cosworth.
3. Continue with their own engines, with the current parities still in place.
Seems like a reasonable compromise to me? Manifacturers can build their own engines, smaller teams can have the FIA Cosworth...