Because of this thread, it is confirmed that after Red (Redigit) has finished with 1.3 (dont ask what that means), he will move from Terraria to make a remake of SMBX called:
SuperX.
If you want to read more here is the link to the topic that I created
http://forums.terraria.org/index.php?threads/smbx.5541/
Or, if you are to lazy to scroll down, here is the topic in a spoiler:
AirSeus (SMBX_User) says:
But smbx was canceled you dimwhit!!!
Well, me here as a smbx member myself, I am here to say that it was contnued by someone else, but we still need the source code to properly update t again on:supermariobrosx.org (no not redigits site, this is the new smbx home :p)
Sir Cutswood says:
I think it's getting remaked, tho.
After 1.3, Red will move on from Terraria, and work on Super X, a remake.
MegaMage314 says:
is it still going to be mario themed? If so then I hope he doesn't get in trouble with nintendo
Sir Cutswood says:
I think it would have the same mechanics BUT a different look and theme.
So copyright is out of question, I think.
AirSeus (SMBX_User) says:
The reason why smbx was canceled was because Redigit was trying to make money off smb and thats against copyright laws, nothing to do with anything else.
If I have missed parts of the topic, its because it has nothing to do with the discussion (I know the first post isnt, but its proof that I created the topic)