One of the longest-standing SU theories known to this fanbase, specifically the Rose Quartz is Pink Diamond theory, has just been confirmed in the least expected way imaginable.
Yes, PD was shapeshifted as a Rose Quartz all along. Let's just say no one, not even me, expected such a long-standing theory would be confirmed like this, especially after people stopped trusting this theory when Back to the Moon aired, it's just one of the most mindblowing moments Steven Universe has to offer.
What's your opinion on all this? Let me know.