The official carrier of the iPhone 3G in Canada, Rogers has today announced a special promotion ahead of the iPhones launch this Friday.

Effective July 11, and as a limited time promotional offer for customers who activate by August 31 on a three year contract, a data-only offering of 6GB of data for $30 per month is being made available that can be added to any in-market voice plan. For example, with 6GB of data, iPhone 3G users can visit 35,952 web pages, or send and receive 157,286 emails, or watch 6,292 minutes of YouTube videos each and every month.

Rogers stores in Canada will open at 8AM on July 11th for the iPhone 3G launch.