Gulfstream Aerospace Corp., well known for its business jets, introduced a new family of swanky jets today: the Gulfstream G500 and the G600.

Most fascinating about the unveiling is the degree of secrecy that has surrounded the manufacturing giant's projects. The two new aircraft offer unprecedented "speed, wide-cabin comfort and efficiency," according to the company.

The cloak surrounding this project led one Wall Street analyst to scrutinize satellite photos of Gulfstream's production facility in Savannah, Georgia, for clues, t he Wall Street Journal reported, emphasizing the financial importance of the project to the parent company, General Dynamics Corp. This particular project has been code-named P-42.

The G500 is scheduled to take its first flight in 2015 and is expected to receive certification in 2017 from the U.S. Federal Aviation Administration and the European Aviation Safety Agency, with deliveries scheduled to begin in 2018.

The G600 will follow, with flight test program expected to launch 12 to 18 months after the G500, with plans to enter into service in 2019, according to the company.

The cabins of the G500 and G600 are distinguished by their wide cross-sections, according to Gulfstream. The G500 has three living areas, and the G600 has up to four, carrying up to 19 passengers each. (Gulfstream Aerospace Corp.)

The cabins of the G500 and G600 are distinguished by their wide cross-sections, according to the company. The G500 has three living areas, and the G600 has up to four, carrying up to 19 passengers each. (Gulfstream Aerospace Corp.)

Gulfstream has announced two new business jets, the G500 and G600, which feature cutting-edge flight deck technology, according to Gulfstream. (Gulfstream Aerospace Corp.)

Gulfstream has announced two new business jets, the G500 and G600, which feature cutting-edge flight deck technology, according to Gulfstream. (Gulfstream Aerospace Corp.)