"Over the next couple of weeks things will function as usual on the PlayStation Store, but no new downloads will be made available as Sony is in the middle of updating the store's interface.
Due to arrive in mid-April, the store's new design is intended to make navigation of content easier by adding more categories and allowing more space per page to list items.
In addition, the store will lose its previous web interface, embedding itself into the Playstation 3 for faster loading. Noel Silvia lets us in on some other goodies on the Playstation Blog, telling us that the store will dynamically change each time you enter, though the background will currently remain the same. Moreover, the mouse pointer is on its way out. Navigating the new store will now be more like scrolling through a menu."