Is this game series finished or are they more products coming eventually.

There seems to be a tie-in with the books. If Martin could be bothered to actually continue the series, perhaps there would be material for a new supplement.

So there are no more expansion? Darn

The next book is releasing this year so I suppose there's hope. I'm not sure I WANT another expansion, but for those who do...

There's been a running theory that there'll be a board of the continent Dani is traipsing around. But the only certain (and that's iffy) expansion would come when the Others cross the Wall, at which point the factions would have changed (i.e Stanis and the Wildlings in the North, Freys in the Riverlands, Dani at Dragonstone) and the areas would change shape and production as Winter progresses, making warehouses more important than fertile land (making the centre of the board less enticing and coastal areas more important since they can fish). Then there could be magic units, dragons, new leaders, etc. That's all just speculation though.

http://www.west2productions.com/Gamers/AGOT9/

these guys have made an expansion that adds 3 more factions it seems cool

It seems good and no issues so far.