I think it's entirely possible it may shift in naming slowly after released. To do so beforehand would be to doom it to obscurity through even more confusion. People might start referring to it by the implementation (Rakudo), which I would be fine with. Maybe a year or two after release it would be possible to do officially do something like this. Prior to that and I think there's far more downsides than upsides (and even after that time who knows what would happen if the name actually changed?)
