I'm pretty sure they won't just stop making more of the show because they've reached the regeneration limit (which was a later invention, anyway - I'll stick with the Second Doctor who said that, barring accidents, Time Lords can live forever).
I think it would be way too early for Eleven to regenerate, he should have more than two series.
I think it would be way too early for Eleven to regenerate, he should have more than two series.