We heard a rumor a few days ago that Apple would be selling unlocked iPhones in the US starting this Wednesday. Well it appears that it was true but started a day earlier. Apple has updated its online store and you can now order an unlocked GSM iPhone 4. 

Both black and white models are available in 16GB and 32GB flavors. It will set you back $649 for the 16GB model and $749 for the 32GB. Shipping is quoted at 1-3 days.

Get all the features of iPhone 4 — FaceTime video calling, Retina display, HD video recording, and more — in a phone that you can activate and use on the supported GSM wireless carrier of your choice, such as AT&T in the United States. If you don’t want a multiyear service contract or if you prefer to use a local carrier when traveling abroad, the unlocked iPhone 4 is the best choice. It arrives without a micro-SIM card, so you’ll need an active micro-SIM card from any supported GSM carrier worldwide.

There is no mention of any support for T-Mobile AWS frequencies so you wouldn't get any 3G data on that network. We assume, then, that this new offer is aimed more at those who travel and would benefit from using local SIM cards at their destination. Like iMessage it could also be a show of strength to the US carriers, or a way to help ease the regulatory wheels by showing how open and available iPhone is in the US.

No word yet on whether AT&T will offer to unlock any existing, previously locked iPhones. In the UK, carriers do offer to unlock for a fee, while in Canada, no carrier unlocks have

Are any of our readers planning on picking up an unlocked iPhone 4? Is the price too high? Let us know in the comments!

[Apple Store]