I asked a question about this plant earlier. It appears to be either indeterminate or semi-determinate as I've already harvested three tomatoes (on August 31) and the plant is flowering again. I live in Southern California, so frost probably won't be an issue. I hope I get another two or three fruit this year.
In reference to Peter Turner's answer, the seeds didn't look like the Husky Hybrid seeds in the picture, though I don't know exactly what distinguishing features I ought to be looking for. Fortunately, my wife took pictures of the fruit:
The scale is hard to gauge from this shot, but the fruit are a touch smaller than a billiard ball. I'm not really sure what caused the cracks in the skin, but only two of the fruit had them. More intriguing to me is the cross-section:
As you can see (blurrily), the tomato had two layers of seeds separated by a layer of flesh. I believe all three tomatoes had double-layers of seeds.
I'm not a tomato fan, but the taste I tried was especially sweet and didn't have as much of the "tomato taste" that I dislike in commercial tomatoes.
I keep forgetting to take a photo of the plant itself and I don't really know what to say about the appearance except that it's a tomato plant. Is this enough to go by?