A leaked video of Android 4.1 Jelly Bean running on a Samsung Galaxy S3 was followed up with rumors of Jelly Bean arriving on the device around August 29, the date of Samsung's Mobile Unpacked Event. The rumors appear true, with Android Central reporting that the update will arrive "next week."

"Sources familiar with Samsung's plan," Android Central reported August 21, said that Jelly Bean for the Galaxy S3 is in the final stages of testing. The update will release after the aforementioned event in regions including the UK. Android Central did not reveal news on North America, or whether the LTE version of the Galaxy S3 could get Android 4.1 Jelly Bean, but Samsung is unlikely to abandon the market. A specific date for the update's arrival is unknown, though Android Central reported "shortly after" according to its source.

Rumors earlier in August from SamMobile suggested that Jelly Bean was under testing on Samsung's Galaxy S3 and S2 smartphones, with the latter less certain. The Samsung Galaxy S3's weaker hardware raised doubts over whether the device could run the latest version of Android.

Features in the update, aside from built-in Jelly Bean features like Google Now, include a "dormant mode" for TouchWiz that improves notification and alert management. Google Now is a real-time updating service that monitors usage over time, so it will know if a flight terminal changes suddenly or if a football match ends.

It is a refreshing move from Samsung. The company is infamously slow when delivering Android updates to its devices, though if true, the move could see Jelly Bean on devices in exactly 2 months. The Samsung Galaxy S3 launched on May 29, 2012, to record pre-orders.

Regarding the Mobile Unpacked event August 29, Samsung is expected to unveil the Samsung Galaxy Note 2 phone-tablet hybrid device. Leaked specifications and benchmarks revealed a device improved over the Samsung Galaxy S3, with a 1.6GHz processor compared to the Galaxy S3's 1.4GHz.