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There is a thread about this on the IDO website. James Holst says Otter is coming out with both a one man flip over and a hub style. And they are coming out with new thermal fabric for next year also.
A couple friends of mine haven't liked the big foot series just because of a manufactured defect like the zipper failing and having a support pole snap. I completely agree that otter will be a game changer. They make excellent products
Why the new fabrics with Otter? I will say that my buddies 900 shell is better than my XT 650. The XT 650 gets hard and somewhat brittle in sub zero temps whereas the old 900 denier seems to stay more pliable.
I use a shanty with 430 denier and never had an issue with it Overkill and Overpriced