Looks like we have confirmed specs for the RTX 1080Ti...
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Short form, 11 GB GDDR 6, 616 GB/sec bandwidth (1080Ti has 480 GB/Sec), 4352 Turing cores.
IMHO they should have at least went with 12GB (since the Quadro cards have lots more than that), but at least the memory bandwidth is almost 50% faster. More VRAM would also have been helpful for multi-4K monitor setups.
The speculation is that these will launch at around $800 US, not including any impending new tarriffs (for the US folks) that may be coming online.
Supposedly, these will launch in the next week or two. We'll see if the reviewers have already received them soon I guess...