Although the bundle including The Teal Mask and The Indigo Disk DLCs for Pokemon Scarlet and Violet was never confirmed to be the only form of major content drop for Gen 9, the fact that an epilogue called Mochi Mayhem was released does seem to mark the end of this generation's support. That isn't to say no more meaningful content can come to Pokemon Scarlet and Violet, though, as it's very likely new distribution events, special Mass Outbreaks, and Tera Raids will come every week or two until Gen 10 games are released. With this in mind, seeing which Pokemon the newly announced 7-star Tera Raid boss will be means that Game Freak will most likely use a familiar pattern for all future ones, which may have pros and cons.