Feuerschwinge is not new at all. She's mentioned in Dragons of the Sixth World (3rd Edition), Shadows of Europe (3rd Ed), Target: Wastelands (3rd Ed) and Sixth World Almanac (4th). The reason why your teammates don't necessarily know of her is the little detail that she woke in 2012, and SR:R is set some 42 years later.
The SR:R Dragonfall plot in 2054? Yeah that's new including APEX. After all with one possible ending you can actually deviate from canonical history.