I think it is the same as the GPL v3, at least these sections do not differ. See section 6. If you do not want to provide the user directly a current copy of y

I think it is the same as the GPL v3, at least these sections do not differ. See section 6. If you do not want to provide the user directly a current copy of your source code to downloaded, you can "accompanied [it] by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software". Then you should be able to fulfill a request for the source code used at an exact date and time 2 years ago even when you already discontinued the product and let go of all people involved. If such a request comes from controlled country like Iran or a recently banned company like Huawei or ZTE it could also get funny for your legal department. I am not a lawyer, please consult one if you want to find loopholes in contracts.