So it's been confirmed?

By whom, exactly?
G3 ended dramatically, and if they'd finished that little quarrel, there wouldn't have been any heroic effect to it. He's going out there, to possibly die, and finish the fight he started because it's his responsibility. THAT's heroic.
K-D have been pretty quiet with the press, but yesterday, I got to speak ith my informant again, and she says there's HEAVY movement at the K-D North offices, and teams of rigging crews are being sent to a stand-alone lot with Studio "G-7" being blocked off by security. According to several witnesses, several people with "(G-4)" (
<<<that's how it looks) jackets have been spotted around the surrounding lot, and when asked, they just say "Can't tell." or "It's from the fan movie." Needless to say, she says that the amount of construction work going on there is interesting to note, because it can only mean that something big's being built there, and from what I know, Yokai War's already finished.
Regardless, the BIG news she could tell me is that she overheard something about a Daiei sketchbook containing the final concept art for G4. Though she's not 100% sure, my informant believes that sketchbook is the exact one she found in the office mailbox, which leads me to believe that this Gamera will battle the Gyaos legion and probably a new Gyaos-like monster, though she believes the "new" monster is Barugon, because it was used in Kadokawa's manga series as the main villain, so it'd make sense that it'd be used.
Now, a release date for the movie has yet to be named because the company wants to organize its' release schedule accordingly because of the belief that ULTRAMAN and FINAL WARS probably did poorly because of timing. That's what one of her colleagues in the legal department
"thinks" is happening.
I told her about that "spoiler" link, and she says to brace yourselves, because that might be the final story, with some obvious things taken out, like the DNA/science bit and the atlantean reference. If by some chance, the director(
they don't know who he is, though people who've "claimed to've seen him" say he's a fresh director with experience and he's young.....? 
) doesn't like the way the script goes, another monster will be used.....Which is pretty pointless, as they'd be wasting valuable film.
Well, that's about all she told me about "G4", which she thinks won't be the actual name but something along the lines of "Gamera:Rebirth/The Awakening" as she heard it from someone who heard someone from legal department say.....
SO remember - UNTIL K-D announces G4, take anything I report as a grain of salt.