Our dog (see below) loves sleeping in bed with us and for the most part, we like it too. She slee in her cage if we put her there, and she'll stay there all night with no problems.
When the baby comes I think we are just going to keep her in the bed. I think that if I'm up a bunch of times through the night with the baby and she is in her cage, she'll just bark. If she's in the bed, she can get in and out as she pleases.
So my question--Where does your dog sleep now? Where will he/she sleep when you have the baby?