Apple は iPhone / iPod touch / iPad 用の次期 OS 、iPhone OS 4 を発表しました。iPhone OS 4 の最大の目玉はマルチタスキングですが、100以上の新機能を搭載して iPhone / iPod touch 向けは夏ごろにリリース予定。iPad 向けは秋ごろだそうです。

iPhone OS 4 のマルチタスキングは iPhone 3GS、iPod touch ( 2009年後期モデル ) でのみ利用できるそうです。

Apple Previews iPhone OS 4

Includes Multitasking, Folders, iBooks, Unified Inbox & More

CUPERTINO, California—April 8, 2010—Apple® today previewed its iPhone® OS 4 software and released a beta version of the software to iPhone Developer Program members. The iPhone OS 4 beta release includes an updated Software Development Kit (SDK) with over 1,500 new Application Programming Interfaces (APIs) and over 100 new features that will be available to iPhone and iPod touch® users this summer. New features include Multitasking for third party apps; Folders to better organize and access apps; improved Mail with a unified inbox, fast inbox switching and threaded messages; enhanced Enterprise support with even better data protection, mobile device management, wireless app distribution and more; Apple’s new iAd mobile advertising platform; and iBooks, the delightful new ebook reader and online bookstore recently debuted on the iPad™.

個人的にはマルチタスキングよりもキーボードが利用出来るようになったことと、フォルダ機能がついたっていうのがうれしいな。