I'd say there's a good chance.
Very good chance. Here's some things you can do based off what I learned at the PS4 launch:
Thursday afternoon
- Go to gamestop around 5:30 or so and ask them about any extra units. They may put you in a line or have you wait until 6 or 7. At 6 people with preorders will start finishing their transactions and will leave the store to come back at midnight. The manager should then let you know the situation if (s)he has any left. If they don't have any left you can ask if they know of any other gamestops that have some extras (or you yourself can and proceed accordingly)
Midnight
- If you don't mind waiting for shipping or paying extra for quick shipping, keep a fast eye on
Amazon and
Walmart. I'm subscribed to
zooalert.com which notifies me through text of any PS4 or Xbone sales popping up. You may want to do the same. Between midnight and this morning I had about 6 different vendors start offering PS4 orders again, including Amazon.
Friday morning
- Kmart at 7am. Costco and Sams at 7 if you're a business member otherwise you must wait a little. Sears at 9am.
I would not recommend Best Buy or Walmart for extra units, but I did stop by one (Walmart) last night and they did indeed have extra preorders. But don't count on those two.