How much will Rise of the Tomb Raider sell?

[ICStats]

I'll say 500K to 750K. Could be more if bundled.

Tomb Raider (2013) sales
1.71M on XB360 with userbase of ~80M.
0.17M on XB1 with userbase of ~5M.

Attach rate 2 to 3%.  Boost a little for exclusivity + marketing.