I am afraid that until now everything about WPOMB is based on rumours. So whatever could have happened about it, is pure speculation. Nothing wrong with sharing your thoughts about it, but please:
do not take them for facts!!
The only thing that IS a fact though, is that the majority of the fans would love to have it on BAT 3
Didn't appear No Matter What on The Very Best as well as being recorded by another band...... Remember that story? Which makes me keep dreaming about WPOMB on Bat3 until I see the actual release.....