Seasons 8–12 are canon, that's an indisputable fact on this wiki and everything about them will remain the same. We'll have to wait and see if the new series will receive the same treatment.
For example, the audio series Slayers: A Buffyverse Story does not contradict the canon continuity, even though it doesn't refer to anything from the comics. Like the new series, the story takes place years after the comic finale, so it's easier not to contradict because any difference can be explained by the simple passage of time.
However, there are publications that explicitly do not consider the comic seasons and contradict them completely, which is the case of the novel series The Next Generation (which also takes place in a rebuilt New Sunnydale). These novels are non-canon, their stories are ignored from characters' biographies, and maybe the new series will be too depending on what the authors say.
Finally, the comics series The Origin was not only sufficiently adapted with the canon continuity in mind, but the authors came out and declared it as canon, so we have its events included in Buffy's biography. It also might be the case with the new series.