Apple has announced that the iPhone 4 will launch in 17 additional countries this week. Currently available in the U.S., U.K., France, Germany, and Japan, the phone will launch in Australia, Austria, Belgium, Canada, Denmark, Finland, Hong Kong, Ireland, Italy, Luxembourg, the Netherlands, Norway, New Zealand, Singapore, Spain, Sweden and Switzerland this Friday, July 30. Despite ongoing concerns over the phone’s antenna design, Apple has continued to see strong demand for the phone; COO Tim Cook recently stated during the company’s third-quarter financial results conference call that Apple was selling them as fast as it could build them.