Spencer teases big line-up coming next Christmas.
Lara Croft actress to appear on Conan O'Brien Twitch stream to play Tomb Raider and possibly 'reveal spoilers about upcoming sequel'.
But developer stops short of confirming PS4/PC version.
But it's Wii U titles that see biggest pre-order increase on average.
"But how can I tell? Other than that cryptic message by Phil Spencer."
Sony won't rule out paying to make a multi-platform title exclusive to PS4.
Happy with 'strong' exclusive game line-up.
Microsoft's Rise of the Tomb Raider messaging is another example of terrible PR - months after Spencer promised to be more direct with consumers.