So, looks like the same compatibility as V1.0. Nice to know.
In the meantime, 1.4 works great now. Much improved speed from what I've seen so far, very well done!
EDIT: One bug: when I play Super Mario All-Stars, the input settings keep resetting to where:
B button= A
X Button= B
Y Button= X
I keep saving global settings, but it doesn't help. Though saving the game settings specifically does.