hi callum,
i click view page source of this article and find its last published time is 3/11/2016 10:36:58 pm pst.

currently, there is no announcement about the changing of the expire time feature. we will keep you updated if we get any information. in addition, if you have any concerns about it, you can share your ideas with our engineering team via
user voice. features will be updated based on the customers' constructive comments.
your understanding is highly appreciated.
sky