Xenoblade (port?) _exclusive_ for new 3ds (no "old" 3ds)

[Augen]

I wonder if the next handheld (not some upgrade or redesign) will be compatible with all 3DS titles or not.

Part of why I like consoles and handhelds is simplicity of buying a system and playing games on it for 5-10 years with no worries of it working or not.