A number of positives and negatives are likely to affect Apple's gross profits in the near future, notes UBS analyst Maynard Um. Among the negatives is argued to be the possibility of an 8GB iPhone 3GS. If real the device would at least be carried by Canada's Rogers, where it would cost $99. It is believed that most iPhone buyers are opting for the $199 and $299 3GS models, rather than the $99
