You hear that rumble? That’s the purring of hundreds of thousands of handsets around the country, aching to gobble up one of the 16GB microSDHC and M2 cards just announced by SanDisk this morning.

This announcement lifts the bar from the previous 8GB limit, allowing handsets which rely on microSDHC/M2 as their primary user memory to go gig-for-gig with handsets carrying 16GB internally, such as the iPhone and Nokia N96. If you’ve got a device that works with the 4 and 8 gigabyte microSDHC cards already on the market, you should be able to swap one of these in without issue. The timing couldn’t be much better for the G1, N79, and the gaggle of other high-capacity ready handsets set to launch over the next few months.

The 16GB microSDHC will set you back $99.99, while the M2 will go for $129.99. Both models will begin shipping come October.