When the new stock RT-N66 firmware that increases NVRAM to 64 KB comes out later this summer, will this increase in NVRAM be permanent or will the NVRAM size go back to 32 KB when the router is flashed with earlier versions of stock firmware or flashed with a non-ASUS firmware (like Shibby’s TomatoUSB)?
Reverting to an older firmware or flashing a third party firmware will make you lose all your settings, and only report 32K available. Tomato devs will have to implement changes in their firmware to also address 64 KB of nvram.