iPhone 5 Wi-Fi signal issues

Upgraded from iPhone 4 to 5 this week.

New iPhone 5 constantly loses wi-fi signal in any other room in my house except the room where the actual router is based. Router is 2 months old N series, works perfectly. Interestingly I upgraded this router so my iPhone 4 could reach it in every room = worked 100%.

This problem does not exist on my other iPhone 4, 4S, iPad, Mac Book, PS3, televisions! and 2 laptops. Just the iPhone 5. I have control tested this to make sure my statement is 100% factual.

This is not limited to just my house. EXACT same issue exists at my place of work and several hotels I have visited in the last few days.

The wifi signal received by the iPhone 5 is constantly intermittant. Sometimes it works for a few moments then drops out, all without even moving it.

I have performed a full factory reset. No improvement. I have performed a network setting reset. No improvement.

ALSO... My company ordered 10 of these that were received on early this week and the majority of people with these new iPhone 5's are all reporting the EXACT same issues. Therefore... I suspect this is an iPhone 5 related issue, not individual specific handsets. e.g. a replacement handset will have the same issue.

Ultimately I am after some form of acknowledgement that Apple are aware of this and working on a 'patch' to fix it.

If anyone has any suggestions to resolve this wi-fi issue please let me know.