Earlier today, two European trademarks were found for Pokemon Sun and Pokemon Moon. It’s assumed that these games will be the topic of discussion for tomorrow’s Pokemon Direct. Further evidence was found pointing out that Pokemon Sun and Pokemon Moon are actual titles. Nintendo of America registered the domain name pokemon-sunmoon.com, although for now it only redirects to pokemon.com. I imagine that will change after the direct tomorrow!
What comes to mind as far as “sun” and “moon” Pokemon are Solrock and Lunatone. I wonder if there’s a connection.
Source: Nintendo Everything