Hrm, well, I wouldn't make too much of the 'leaked' image not being on every website out there, ...could be a lot of reasons, including someone in Spain just not having seen fit or bothered to change it.
I suppose, though, it wouldn't be unreasonable if there were a less-exciting announcement of another model waiting till after the big fanfare ...maybe a mild improvement on the K20 or K200... assuming this K-7 is going to be a bit pricey at first, that could kind of leave a gap in the middle of the lline: if they bumped the K10D's sensor down to the D200 when the K20 came out, they could do the same to make a D300.