The first arranger taking the step to standard PC hardware, like the Korg Kronos did, is the big winner..
I hope this will be the PA4X-Pro.
Or Kronos 2 adding PA style features..
Frankly, this seems less likely, considering the number of Kronos users that are asking for this feature (more or less = 0, if you look at all the posts on KorgForums.com)