FIL called tonight. First, some explanation -- my MIL passed away long before I ever met her, & FIL remarried almost 20 years ago. StepMIL has four children, three boys and a girl, who are all more or less the same age as dh & me. The relationships we have with them are not close -- we were all adults at the time of the wedding -- but are cordial. They have three marriages, two divorces and no children among them -- until now.
Tonight's call was to tell us that youngest stepBIL's wife is expecting in August. They are both 40, going on 41 -- married for a couple of years & together for about the last 10. They've known each other since they were in school, although both were married to other people in the interim. BIL's wife has a daughter from her first marriage, who is in her first year of university (!!).
Dh talked to stepMIL & congratulated her (he didn't call me over to the phone, thankfully!). Of course she is (understandably) absolutely over the moon, as this will be her first and likely only grandchild. I can't begrudge her that, but of course, this will be the primary topic of conversation whenever we go to visit there for the next seven months (& thereafter).
I don't know the exact due date, but wanna take bets that it will be right on or around Katie's 10th anniversary date? :(