TomKat getting a new Kitty?

There are reports that a representative of Tom Cruise and Katie Holmes went to trendy West Hollywood baby boutique Petit Tresor last week, looking for four "scenarios" for a boy's nursery. The confidente was overheard saying, "We want to be prepared for a baby boy." Sports, nursery rhyme, cartoon and the color blue were the four themes offered. How much would you be willing to spend on nursery decor? How about baby fashion?

TMZ.com reports that:

The estimated cost for the eggshell blue-themed room alone is $45,000 -- and would include a custom-made blue and white antique crib, blue bedding and blue walls with floating clouds. The shop was also given a deadline of April 15, three days before Suri's first birthday, to come up with the designs.

How would they know it is a boy? Is it Tom's home ultrasound?