I like Pokemon more than you! :p
A trademark for Incandescent Arcana (白熱のアルカナ) has been filed by Pokemon. It’s under the same terms as trademarks previously used for set names.
“Incandescent” means to emit light when heated and “arcana” means secrets or mysteries. Perhaps this supposed set could feature Heatran or Cresselia? So far Dialga, Palkia, Arceus, Darkrai, and Giratina all seem to have upcoming sets (Shaymin is featured in Brilliant Stars). This leaves Uxie, Mesprit, Azelf, Heatran, Regigigas, Cresselia, Manaphy, and Phione.
DP4: Moon Hunting / Dawn Dashing
DP5: Temple of Anger / Cry from the Mysterious
We usually discover trademarks five to six months before they go into use, so this may be a set releasing...