SCEA 의 공지에 의하면, 4월17일 북미에 발매되는 그란 투리스모 5 프롤로그는,
현재 프롤로그 보다는 업데이트 된 버젼이라고 합니다.

- 60대 이상의 차량 지원 (현재 37대)
- 퀵 튠 모드 (파워, 타이어, 서스펜션, 등등)

위 두가지만으로도 엄청난 부수적인 재미가 있겠네요.
타이어 마모도 생길수 있단 소리이고, 파워튜닝도, 되고,
무엇보다 차량수가 60여대가 된다면, ㄷㄷㄷㄷㄷㄷ

코스 추가에 대한 언급은 없지만, 암튼 무지 기대되는군요.

그리고 일본 버젼에서는 다운로드 패치를 통해 지원될것이라고 합니다. (아마도)
아쉬운점은, 로비나, 음성채팅 등의 지원에 대해서는 전혀 언급이 없군요;;

기사 원문 : http://www.gtplanet.net/forum/showthread.php?t=96425

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So, below is official press-release form SCEA. Note few intresting bits, but somehow I doubt to beleive in them because we all know that PR often missintrerpret the reality. Notice that RD is set to "spring".

However, here are the most intresting "facts" for US release:

• Race more than 60 high-performance and exhaustively detailed cars, including vehicles from Ferrari, Audi, Nissan and Mitsubishi,
• Quick Tune facility allows you to adjust power, tires, suspension and more.

FULL PRESS RELEASE
Gran Turismo 5 Prologue

FACT SHEET

Publisher: Sony Computer Entertainment America Inc. (SCEA)
Developer: Polyphony Digital, Inc.
Platform: PLAYSTATION?3 (PS3™)
Genre: Racing
Release: Spring 2008
Rating: “RP” for Rating Pending

OVERVIEW

With more than 47 million units shipped worldwide, the award-winning Gran Turismo™ franchise has raced far beyond a driving simulator experience; it is a global lifestyle. Setting the bar to unprecedented heights of realism, quality of design and physics technology with every product release, famed developer Polyphony Digital, Inc. continues to obscure the line between simulation and reality with the newest iteration of its blockbuster franchise, Gran Turismo™ 5 Prologue, exclusively for PLAYSTATION?3 (PS3™).

Available on Blu-ray Disc and as a download via PLAYSTATION?Network, Gran Turismo 5 Prologue showcases the automotive experience that is imminent with Gran Turismo 5. Featuring over 60 meticulously detailed cars - including vehicles by Ferrari, Audi and Nissan - for users to race on five beautifully rendered reversible tracks from around the globe, Gran Turismo 5 Prologue runs in stunning1080p High Definition. Gran Turismo 5 Prologue will also introduce to the franchise an in-cockpit view, providing a unique perspective for racers and featuring real-time gauges and human animations that accurately represent the true performance and handling of each vehicle. Additionally, in conjunction with a robust offline experience, for the first time in the history of the franchise Gran Turismo 5 Prologue will support up to 16 players racing head-to-head online, complete with community events and leaderboards, to quell any question of who is the best driver in the “World of GT.”

Dedicated to expanding the user’s immersion in automotive culture, Gran Turismo 5 Prologue will feature access to Gran Turismo™ TV, a dedicated online channel available exclusively from PLAYSTATION Network that delivers some of the greatest motorsport and manufacturer content that television has to offer.

KEY FEATURES

• A first for the franchise, Gran Turismo 5 Prologue supports online racing with up to 16 drivers racing simultaneously on a beautifully rendered race track.
• Race more than 60 high-performance and exhaustively detailed cars, including vehicles from Ferrari, Audi, Nissan and Mitsubishi.
• Race on five stunningly realistic tracks, including the Eiger Nordwand, the London City Track and Suzuka.
• A new physics engine delivers next-generation vehicle handling. True to the heritage of the Gran Turismo franshise, this new physics engine provides unprecedented realism and authentic handling specific to each car.
• A new in-cockpit view provides a unique perspective for racers and features a customized dashboard for each of the cars in Gran Turismo 5 Prologue. Real-time gauges and human animations accurately represent the true performance and handling of each vehicle.
• All-new and improved opponent AI for a nail-biting and more strategic race racing experience.
• Access to Gran Turismo TV: a clearinghouse of great motoring TV (video) programming (both HD and SD – all broadcast quality) online through PLAYSTATION Network.
• To extend the realistic driving experience, Gran Turismo 5 Prologue is also compatible with the new DUALSHOCK?3 controller, which has vibration functionality.
• Quick Tune facility allows you to adjust power, tires, suspension and more.
• Gran Turismo 5 Prologue runs in stunning High Definition at 1080p (race: 1080p-60fps, replay: 1080p-30fps)