I've ordered and got a dead pixel on an apple display before.
it does happen.
I think if it were me, I'd send it back and have them ship the
new 2.16 machine, as should have been shipped, and then
asked for some free applecare or some extra money refunded
due to the extra wait time.
When apple delayed all the orders for Macbook Pros, they
gave me a $20 refund because i was pissed about the delay.
Then they ended up shipping it earlier than the INITIAL date,
so not only did i get my computer EARLY, i also got $20 back.