In answer to your question, no, Its certainly not typical of men in this situation.
Actually, that fact that he is indifferent would suggest that he has issues he is scared of addressing, and also, probably feels a bit helpless at this stage.
Was he a caring supportive husband before though? Did he ever show affection when you were feeling down, or has he always been a bit aloof?
If so, then sadly he is just continuing to be the person he was.
Either way, it does not forgive his attitude at a time when you are in need of all the support and understanding that you can get. Tell him just that. If he was always a bit of a cool calm collected chap, let him know that while you understand that is a facet of his personality, you need him to be more supportive, interested and responsive to your needs right now.
If he has gone through a change which has made him act unlike the person he normally was, tell him that too. Let him know that you are worried that he doesn't appear interested , that if he is feeling helpless , you don't need advice, just support and affection during what is a trying time.
He may also be going through the, "Oh God, kids , mortgage , getting old, life is over crisis" some men suffer when they realise they are going to be parents. Itll pass. Was the pregnancy planned, or a surprise to both of you?
If its a surprise, he may just be scared stupid over the sheer reponsibility of it all.
Either way, I hope you can work it out. Tell him you really enjoyed his input in the Research and Development module, but now that you have moved totally into the Production stage, you need the support of Human Resources, Logistics and Post Production Personnel.
Namely, him. Those jobs require hugs, loving remarks about how the Production Unit is glowing today (Human Resources), the preparation of lots of decaffeinated coffes and biscuits , foot rubs, and constant attention. (Logistics)
Give him a job to do that makes him feel worthwhile, like preparing the baby's room if you're going to have a seperate one. (Post Production)
Good luck and congratulations!