I noticed flickering when doing my comparison of the AT&T version vs International.
The area's that I noticed it the most was when i was in settings menu or some other selection area, when I clicked on a selection in the settings menu, the selection area (for example - brightness) would flicker before the brightness page came up. A little different and less extreme than what is shown on your video, but was still an annoyance.
Its pretty obvious so im sure they'll catch it and fix it with a new firmware. I dont think its anything they cant correct with a minor software update.
Do you have your power saving mode turned on? Perhaps turning it off will reduce it some...