If their track record is consistent they should repost this in a few months either for more pre-orders or when it finally hits US shores.
I was stuck in a work meeting and missed the pre-order. I added the set to my favorites list in the Target app so I can keep an eye on it and watch for one of those magical windows where it is available again sometime in the next 6 months.
I'm in the same boat. I'm not too disappointed though. I have the basic figure preordered and there isn't a ton of extra value included here. If it comes back in stock or I see it in stores, I may eventually swap out the preorder of the basic figure for the deluxe version.
The Massiff looks good and is definitely an improvement, but I never disliked the Saga version, and I have a few of those around. I'm not sure the beast itself is worth an extra $10 to me. Put me in the camp of preferring another Tusken repaint/retool over the straight repack of the new Tusken Warrior. I wish they at least had included an addition unique accessory in the set.