Will Brad Pitt and Angelina Jolie get married before the birth of their next child?

Update May 27th:
It was rumoured back in March that Angelina Jolie had married Brad Pitt in a small chapel in the French Quarter, after the couple previously said they would not tie the knot.

Although this rumour is still unfounded, what is known is that the couple and their brood have recently purchased a 70 million pound French chateau, and seem set to deliver and raise the twins there. What a lovely backdrop for the happy family snaps we are expecting to see hit the tabloids.

Are they giving up their jetsetting humanitarian lifestyle for a humble French nest? Does this mean they are closer to making their union official? The markets which started at a humble 15%, given Jolie's past insistence they had no need to marry, have swelled in proportion to Jolie's stomach over the past month, hitting a peak of about 35%.

Yet, as the impending birth date gets closer (when exactly is she due?), the markets are falling as it seems the couple will do anything except say 'I do'.