2.0 Will not support Real Time save. At least not like you know it (save state feature).
The "real time" term Gateway used refer to something else.
Currently, to backup the save data to SD card, you need to exit the game using Home > X
doing this start the backup process and copy the content of the Flashcart's own memory to SD card's xxxxxxxxxxxx.sav file.
"Real time save" refer to "Automatically access SD card's file to save the game's progress, no need to press Home > X anymore".
It saves to SD card in real time, without requiring the user to press Home+X.
It won't be a save state feature, like the one used in Emulators (and named "RTS" in DS mode flashcarts).