Can I upgrade my Iphone to New upgraded iphone

You can trade up. Check this link...

Apple Trade In - Apple

Iphone13j Said:

"Can I upgrade my Iphone to New upgraded iphone"

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No.

Performing a Returning:

But you might be able to return it. How long have you had this iPhone 13? You have 14 days to return your purchase. So, if applicable, return it, and then purchase this new iPhone. Note that it can take up to 30 days to get the refund. If it has been more than 14 day, then it would not apply.

You can't upgrade an iPhone to a new iPhone, but you might be able to trade in your old phone for a new phone.

Apple Trade In - Apple