All can say is that it is ABOUT time that something was announced. I mean, it is not even THAT much more space that's needed, maybe another 2GBs. From an interview with IGN:
On a related note, Iwata offered a tidbit sure to excite Wii owners who have already run out of system storage space. "Statistically speaking, it is true that there are a small number of customers who feel that the flash memory is too small, while many others find that they have plenty of memory," he said. "However, because this small number of people are none other than the most avid players, we know we have to review the best possible solution to eliminate their inconvenience."
On a related note, Iwata offered a tidbit sure to excite Wii owners who have already run out of system storage space. "Statistically speaking, it is true that there are a small number of customers who feel that the flash memory is too small, while many others find that they have plenty of memory," he said. "However, because this small number of people are none other than the most avid players, we know we have to review the best possible solution to eliminate their inconvenience."
-Insert Inspiring Quote-