It's really only a matter of time. It may be a much longer matter of time than, say, the Samsung Infuse (which will probably be rooted even before the official release day, because someone will inevitably get a leaked device a few days early, AND because of the proliferation of Galaxy S devices and how similar their hardware is from device to device, which means that practices that have worked with other Samsung devices will likely work with the Infuse).
Honestly, I'm still kinda tempted to get the Infuse, just because it will be ridiculously easy to mod the hell out of that one. Frankly, the only two deal-breakers for me on the Infuse are lack of HDMI output, and SAMOLED Puls display.
Now I know you may think I'm bonkers to say that the SAMOLED Plus display is a bit of a deal-breaker, but let me explain why:
I currently have the Captivate. I've had it since release, and although the display is generally really good, I do have to say, I have noticed the "burn-in" effect, especially when turning the device in landscape and viewing web pages, or during boot up. The "ghost" of the status bar is getting even more and more noticeable each day. Not good...