When will MacBook Pro’s get an 8th generation processor?

I’m really interested in upgrading my Early 2014 MacBook Air, but everything I’m reading suggests I should hold off for a while. I’m hoping that the upgraded MacBook Pro’s that are rumored to be announced in late summer/early fall will have the 8th generation Intel processors, but I’m not very confident of this. What do you all think about the odds of seeing 8th generation Intel processors in the next MacBook Pro refresh?