Hard to say if this is true, simply because Silent Hill, Castlevania and Metal Gear is like 75% of the IPs(in terms of value) from Konami.If they are bought, Konami is left with Bomberman, Contra, and smaller IPs like Suikoden and that baseball game.
I don't think Konami is interested in selling the IPs, no matter how shitty and uninterested they became with games.However, I easily see them making partnerships and "renting" their IPs to others so that they make games based on them.I think that's the case here.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1