In the same investor briefing that revealed a new Kirby title, Nintendo has announced that the Nintendo 3DS will get its eShop channel as late as May in Japan through a “major software update” that includes the web browser and the ability to transfer DSiWare titles.
It’s likely that the eShop delay until May will only be the case in Japan, as Nintendo has already confirmed that the UK will have the update on launch day.
Update* Looks like this will be a worldwide update and not just Japan:
“The first system update is scheduled for late May, at almost the same time around the world,” president Satoru Iwata said. In addition to the eShop and the internet browser, the May update will also enable the ability to transfer DSiWare titles from a DS to a 3DS system. – Link