I'm sorry to be a damp squib, but there is next to chance of this happening.
If you think about it - if they did it once, then every gig would be a role-call of names for birthdays, engagements, in memorioiums, and so on, which is why no band ever does it.
If they don;t ever start, then no-one will be left out, so they all adopt the same approach - they don;t do this kind of annoucement.
Sorry to be the bearer of bad news, but this will save you a load of time, postage, and disappointment.