Samsung’s Galaxy S lineup has yet to arrive in U.S. stores, but it looks like all their devices will be easily rooted thanks to a hack discovered on the international version. Russian developer LeshaK of Samdroid was the first to gain root access on the Galaxy S (i9000) and the community over at XDA-developers has taken his work and ported it to the U.S. versions of the phone.
Gaining root access is as simple as flashing an update.zip file and it has already been confirmed to work on the AT&T Captivate and T-Mobile Vibrant. Only a single modification to the update script is required for each device so this should also work on the Sprint Epic 4G and Verizon Fascinate when they arrive.
Paul O’Brien of Modaco has already created a custom ROM for the international version, but it has yet to be tested on any of the U.S. models. All the Galaxy S devices are nearly identical so future ROMs should be compatible with minor tweaks.
Now that Google has released the source code for Android 2.2 and Samsung released their code for the Galaxy S, it should only be a matter of time before the community has a stock version of Android 2.2 up and running. Given that this phone is coming to all four tier 1 carriers in the U.S. (and a couple regional ones), I expect a sizable development community will support this device.