Pity. Seeems to be loads of novelty stuff for the tom tom but nothing for the garmin
I've got the 310d and I've heard the hardware is the same as the 350/360 so in theory you could add the text to speech features to the 310 with some sort of firmware hack. Been searching everywhere for one but doesnt seem to be anyone working on it.
Great little unit though well happy with it
allroad is right ,the unit tends not to take any new/updated maps but the sd card does.thats how the i3 works as well. you could add poi's from tomtom stuff using the poi edit which converts tomtom files to other type files