I tried the new HS ITouchHome with the 3.5" Infocast last night.
The screens created for the plugin get automatically resized for the 3.5" Infocast.
The buttons are too small to be practical in everyday use though; better for just status screens.
Works fine though much slower response times than the Infocast 8" device.
Historically I have not played with the 3.5".
Goofing around with it (SSH, this and that) last night noticed that its much slower than the 8" Infocast.