Shortly after being announced in conjunction with the Galaxy S III, the stylized news reader app Flipboard has leaked out. The file is available for download and side loading as an APK file. These are the file packages in which Android apps are contained and can be installed outside of the Google Play Store.
One member of the always resourceful community over at the XDAdevelopers forums has managed to get ahold of the file which can be easily installed on your device of choice. This is one way to get around the period of timed exclusivity the application was to have when the Galaxy S III launches.
The install file can be found at the source link below, courtesy of XDAdevelopers forum member Valcho managed to pull the file off of a Galaxy S III that he just happened to have lying around. Leaked files like these never stay up for long so get it while you can.