Pretec, who seemed to be one-upped by
Lexar's 4GB CF announcement, is rumored to be announcing a 6GB card sometime around CeBIT.
SorobanGeeks has a picture:

I've got one word if this is true: 8O This might be just a picture of a sticker on a piece of plastic right now, but I'm glad they're not slowing down in pushing size limits.