The OnePlus 7T Pro went on sale in India on October 12, in China on the 15th and in Europe on the 18th (and it's not coming to the US). We'll wait to see the initial sales numbers, but if last week's poll is any indication, the new Pro is not off to a good start. Only 1 in 5 people say they want one. Compare that to the OnePlus 7 Pro, which launched earlier this year, and polled much better with 2 in 5 people expressing interest. Of course, back then some were curious about what the 7T Pro will be like, so the old Pro could have scored even better. The bad signs were visible even back...
Source: https://www.gsmarena.com/weekly_poll_results_the_oneplus_7t_pro_is_off_to_a_rocky_start-news-39700.php