Haven't watched the episode, but seen the new opening. Looks promising, and seems more action-packed.
It seems that Goh is going to be focusing on battling again, which is good. With his core team being shown, an instance of him battling Ash, Raboot evolving to Cinderace, and also fighting Eterneus Goh is definitely going to be battling more often. Might even enter the world Championship and fight Ash in one of the finals, depending on how good he gets. Also leaning on him getting Zamazenta, with Ash getting Zacian.
Ash may get an Aerodactyl(Obligatory Flying Type?), which is a nice pick. I'm still hoping for Pokemon rotations, but seem unlikely with the focus on Riolu. Interestingly enough Farfetch is being pushed as a rival to Riolu, so he may get more of a spotlight.
Other than that confirmed to encounter all the main legendaries, with Goh possibly catching Zapdos. Alola gang, excluding Lillie, is back which will be a fun set of episodes. Adventures with Leon and Raihan possibly. Bea battle coming up. Also Ash and Goh battle training episodes most likely. Definitely a lot to look forward to this season.