Well that would be an odd case if it literally released tomorrow almost like a shadow drop, lol... I likely wouldn't have the system/rig needed to play it, so it'd take time for me to scramble to get it. If it released normally with an announcement at least months before release, most likely day 1.
Free Step Dodge
inochinagi
gfg$
Not first day, because all the services where I would buy it, left my country , but definitely after couple of days since release when physical copies would be appear in internet shops. And I would get maybe after first week after release like with Ninja Gaiden 4 (actually it was available day 1 on internet shops, so I waited for 6 days before my order delivered)
d0beye
I would wait until I get a better PC lol
DestructionBomb
That's silly because I would be playing it right now if it came out tomorrow. (The joke is that DOA6 and all versions of DOA5 I had early copies before it came out. DOA2-DOA4 were the only ones I had to buy on release)