Hi I received these this morning and can confirm that if minis aren't attached to their bases you could just about squeeze everything in, but it would be very tight. If the minis are on bases you won't be able to. I'm painting my minis and want to keep them separate in individual slots so I don't have a choice.
(BTW I am talking about the second edition base box, I'm assuming thats what you're talking about too)
Will I be able to fit 1 of the new expansions in with my base box, do you think?