It means that they are filling your order, litereally taking product off the shelves and putting it into the boxes. It will change to "shipped" and get a trackign number next as the boxes are shipped. After that it's up the shipper and B&H won't change their status anymore.
- Mikko ... is tracking a B&H order in another window.
Powerdog:
In your case it means we've received your order and on 3/18 handed it off to UPS. By now you should have received email from us with your UPS package number. It's en route. Enjoy.
B&H use a decent system for letting one know what's going on, i.e. email confirmation of order & email confirmation of shipped items.
However, it is not without flaws (what is?), and sometimes their shipment-confirmation-email arrived AFTER the items ordered.
I recall receiving one shipment advice email a few WEEKS after the item showed up.
All-in-all, they have a good system, a GREAT website, good prices, and Henry (who makes up for the sometimes slightly "difficult" customer support)!