TechCrunch claims that Apple has ramped up iPhone 3G production to a massive 800,000 units per week. They cite a source with direct knowledge of the numbers.
Apple Ramps Production to 800,000 iPhones a Week
                                    
                                    
                                    
                                
                            Apple Ramps Production to 800,000 iPhones a Week
 
                                 
                                 
                                