1. Opinion only, I'd say if it doesn't have to be there, there is no harm is disclosing the old logo as it is not misleading in any way. But I haven't seen any official interpretation on that.
2. If your envelopes are offering deposit products to a customer not having that product, yes, you should have the new logo because in this case it is required. If it is required, it should be correct.
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AndyZ CRCM
My opinions are not necessarily my employers.
R+R-R=R+R
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell