yes but they were 1080i which is interlaced not 1080p which is progressive which the new back to the future releases will most likely have.
I thought there was only 720p, not 1080p. Besides, at 1080i, film based material will effectively be 1080p anyway. The signal your SD TV receives from your DVD player is 480/576i but since both fields come from the same frame, you're basically getting 25 576p frames per second (albeit with a little bit of shimmer, which is down to the display, not the source).
DE