So Kim must be at 20 weeks already. Anyway, unsurprisingly they saw it fit to share their news with the planet, and here it is...
A matter of hours ago, Kim posted the below to her Instagram, captioned "Precious moments like this when we were traveling on tour with you are what I live for. You're such a good daddy to North & you will be the best daddy to our new son too!"
Kim also posted this pic of North, presumably being inflated with energy after a nap (that or dad's sucking the life force from her, it's open to interpretation), along with the words: "I'm so lucky to be married to a man who is so in love with his daughter, your bond is so irreplaceable! Thank you for being such a good dad! We love and appreciate you so much! We're so blessed to have you!"