Oh hell yeah! Season 4 of Ring ni Kakero 1! I was hoping that this would be announced this weekened, and it was. As for the "Masami Kurumada Project", this might be a part of it, but Kurumada himself put on his blog a picture of a Pegasus Saint from the back. More than likely it's Seiya, indicating something related to the original series' canon. But for now let's talk about Ring ni Kakero 1: Sekai Taikai-hen!
First off, the subtitle translates to "World Tournament Chapter", which is the main story arc that the previous seasons were all leading up to, so there's obviously going to be a lot to live up to. As for the cast, it seems like every major character from the last three seasons are back, so the new names on the cast list are for the members of Team Greece, and so far the only name I can confirm is that member Theseus is voiced by Kazuya Nakai (a.k.a. Zoro from One Piece and Hijikata from Gintama, among other roles). This is actually great news, as Nakai already voiced Theseus, albeit it very shortly, in the 2003 Pilot Film, so it's great to see that Toei is keeping with continuity from that film.
Also, the director for this season is yet another person, which seems to be a pattern with this anime. Seasons 1 and 3 were directed by Toshiaki Komura while Season 2 was directed by Yukio Kaizawa, but Season 4 is done by someone else and I can't tell who right now. Finally, this season is co-produced by Sammy, who makes the very-popular pachislot machines based on Ring ni Kakero 1. While Sammy had sponsored the airings of Seasons 1 & 2, Toei produced Season 3 solo, so it's interesting to see Sammy putting their money directly into the production this time.
This should be good...