With only a few weeks left to go until Samsung’s big London reveal, the leaks are just flying out of the woodwork now. If that recent Brazilian leak didn’t quite fill you with much confidence, this one just may — the team at Tinhte.vn recently posted an extensive hands-on with what claims to be the Samsung i9300, perhaps better known as the Galaxy S III.

I know, I know, we’ve seen scores of leaks up to this point, but it’s worth pointing out that Tinhte has an impressive track record. They went hands-on with the new iPad before just about anyone else, not to mention scoring early images of the iPhone 4 and Samsung’s 10-inch Galaxy Tab over the years.

Anyway. The i9300 — which BGR claims is the correct model number next big Galaxy phone — features a 4.6-inch 720p AMOLED display on the front, and an 8-megapixel camera pod around back. If the body looks a little strange (not to mention different from that other recent leak), The Verge reports that the device in question is wrapped in a dummy shell so as to keep the device’s true visage from showing through.

Inside that ersatz shell is a 1.4GHz quad-core chipset, and thanks to a quick look at the device’s System Information screen, it indeed appears to one of Samsung’s Exynos 4×12 series systems-on-a-chip. The device also sports 1GB of RAM, 16GB of internal storage, support for NFC, and the usual microSD card slot. The specs that Team Tinhte spell out are a bit more realistic rumor mill has circulated recently, and lends a bit of credence to the notion that the GSIII is more of an incremental update than a full-blown revolution.

At this point, there’s no way to be sure that this device is indeed the Galaxy S III (or whatever Samsung ends up calling it), but the fact that Tinhte has since yanked their post entirely fills me with a glimmer of hope. Fortunately, a copy of the video has made its way to YouTube with English subtitles, which I’ve included below.