I think the new movie based on Old Path White Clouds
will be considerably different than these animated versions. TNH avoided most of the references to the magical and miraculous and focused on the greatness of the Buddha's philosophy and teachings.
Of course, most of us here who are pretty versed in the Suttas and historical India so I'm sure we will still find plenty of 'mistakes' and other inaccuracies with the new movie, when it comes out.
If memory serves the maker was going to do a film version a while ago but it was very contraversial due to the planed layout or storyline it was going to have. but I think TNH does focus more on the philosophy & teachings than the godlyness (flobw) which can be found in certain Mahayana schools, although certainly it will be of a more Mahayana feel than Theravadan.
I have seen the cartoon, it was on youtube a while ago btw