What are the new requirements for visa extension at Jomtien Immigration in Thailand?

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I applied for my second extension today. Everything went smoothly thanks to the kind and helpful officers at Jomtien Immigration. After accepting my documents, they gave me a form stating I need to bring an updated bank statement/bankbook to the same counter along with my next 90-day report. I'm aware of the financial requirements to keep the extension valid, but I don't remember receiving this document after my first extension last year — seems like a new requirement to me.