I would like to give greetings from America to Russia.
Hey there!
R1 - R4 are what collectors here call Extraordinarily Rare items.
If you ever actually see one of these modules, it will probably be behind heavy glass in a collection, or at the auction at Gen Con, American's largest gaming convention.
R1, or any of the Rs, will fetch hundreds of dollars in such an auction, if it is in good shape.
And yes, the Rs dealt with a separate continent on the world of Oerth, where the Greyhawk Setting is.
There is a poster here named William. He is a good man, and a great poster, and a friend of mine. He knows a great deal about the Rs.
You can find William down in the In Character Forum. He often posts there.
If you were to ask William, I am sure he would be happy to help you, and give you all the information he has on the Rs and this new continent.
I know the Rs contain a map for the continent, although it is incomplete.
I12 was indeed related to the Rs. I think - I stress the think, I am not sure - that they took one of the R modules, expanded it, and re-released it as I12.
I do not know if they will develop this new continent.
Greyhawk is, according to what I know, in the hands of the RPGA, or Role Playing Gamer's Association.
However, the RPGA is a formal public gaming organization, not a company, and the RPGA does not have a lot of money (not at least, in the corporate sense of the words lots of money.) I do not think the RPGA can just decide to create large scale expansions and submit them to the printers for publication! But they do the best they can, with the resources they have.
Piratecat, is a member of the RPGA, and more In The Know than I am. Perhaps he can tell you more concerning the plans of the RPGA and how they will be working with WOTC to develop the world of Oerth.
Talk to Piratecat. I'm sure he will be glad to help you. He's been around on the ENBoards since the start, and he's pretty cool (although I must rebuke him for closing my Cannibalism Poll!

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