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Past experience reveals the only sure way to confirm when it shipped, is once you have a tracking number from the carrier.
 
I believe it's a 3-step process:

1. According to where you ordered it from, did it say your order has been placed?

2. To confirm, did you receive an acknowledgement from them

3. Tracking info

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I ordered mine around 1pm PST and got email confirmation a few minutes later. No tracking info as of yet.
 
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