This is a useful bit of info for converting your existing .SVG files to the Scan & Cut .FCM file format.
Also, you can add .FCMs right now by zipping them to create a file with a .ZIP extension and adding them as a zipped file (which is already allowed up to 10 mb) while we work out what is a reasonable limit for the file size of a .FCM file.
Hopefully that will happen pretty quickly after removing the .GSDs