The internet is rife with speculation that Nintendo will announce a hard drive for the Wii at next month's E3.
The rumour has its origin in two sources. The first is French site Jeux France reporting “rumours which appear credible to [them]” that indicate there will be “a 'large revelation on the Hardware level
Next up was a podcast from IGN in which the hosts speculated that a hard drive will be unveiled soon. Their reasoning was that the Neo Geo games due on Virtual Console
this summer are larger than the service's current offerings and will necessitate more than the 512MB of flash memory currently available on the Wii to store them.
Add these two sources together and, according to Go Nintendo and various others, you get Nintendo announcing a new hard drive for the Wii at E3.
SPOnG had the presence of mind to speak to a Nintendo representative on the subject who said, "It is pure rumour and speculation and none of it is based in any fact or announcement." Chalk up a point for Nintendo on the SPOnG Industry BS Index - there is no 'fact' behind the rumour.