SanDisk has started shipping 8GB versions of its microSD and M2 cards, for the current generation of S60 3rd Edition and UIQ 3-powered smartphones, taking possible capacity of these devices to 8GB while maintaining the flexibility to swap cards or transfer data in this way. MyMemory, (e.g.) have these coming soon at £60 inc VAT)

To some extent this negates an advantage of devices like the Nokia N95 8GB, but don't forget the advances in RAM and performance. Still, it's a useful capacity bump for older devices!