We already mentioned that the domain name GrandTheftAuto6.net redirected to videos about Miami and Colombia. Then to a 1980s song and to a message. Now it redirects to a post on GTAForums in a topic about Colombia (discussing that it would be interesting to see the next GTA outside of the US in Colombia where you play as a drug lord building an empire). The post is from 2016, but it was edited by moderators.
The Last Supper private board will open Saturday 11th April 2020 at 23:59 UK.
Only the Preacher has the ability to create new topics, his apostles can reply, all the non believers can do is follow the sermons.
Apostles will be recruited soon.
It is worth noting that Sunday, April 12, 2020 is the Western (Catholic) Easter holiday (Eastern Orthodox Easter is a week later on April 19). If this private board is about GTA 6, it seems like an Easter egg. However, the Last Supper of Jesus Christ and His apostles was on Thursday before Easter.
Who is the Preacher mentioned in this post? Apparently the same Scottish leaker gonnaenodaethat who posted cryptic messaged on GTAForums in March. We don't know why he is recruiting a team (apostles) but it is clear that he cooperates with the moderators.
By the way, if Rockstar announces GTA 6 on Sunday, it will be a great Easter gift.