It's been known for a while that the 32GB version of the Lumia 1520 would be heading to AT&T in due course, and we're sure consumers who are after more internal storage than what's currently available will be pleased to see such a launch. It's also worth noting that both models come with microSD support, allowing you to add a further 64GB to the table.
We've attempted to reach out to AT&T for further confirmation and will update you accordingly. Are you waiting for a Lumia 1520 with more capacity? Sound off your thoughts in the comments.
Update: We understand that the Lumia 1520 will be DF (Direct Fulfillment) only, meaning you will have to go online to order and not via stores.