I figure 3 wouldn't, but what if down the line a game is made for RPG Tsukuru 4? Would it have it's own section? Would it be put in the RPGMaker 1 section? Would there be no support at all?

I have plans to develop on these, which is why I ask.

RPG Tsukuru 3 already is supported:
http://www.rpgmmag.com/rpgm/rm_listings_a_i.php

I don't think RPGT4 will ever be supported. One, you can't play it without a Japanese system, a modded system, or ePSXe. Two, it's incredibly hard to find. Three, the only two people I know actually own a copy are Lantis and Valkysas, and I don't think either of them are trying to make games for it, since nobody else would be able to play them.

Of course, you never know, Agetec might give us a nice big surprise. Has been a while since we last got a new RPGM.

RPG Tsukuru 3 is all ready supported.

You made Donkey Kong with it.

There's a better chance of "Edward's Quest" winning a game of the year award from nintendo power for "best sports game on iphone".