.Enough thinner and lighter.All this means is that there will be no room for anything but thunderbolt and usb c (one of each). There is no way that I going to have a whole bunch of adapter cables in my bag.
It's all going to be USBc and thunderbolt in the future. I wonder whether USBc will take over thunderbolt too? Ports are always changing and getting smaller. I remember 25 pin SCSI ports back in the day. A USBc port can handle more data at a tiny fraction of the size.
FireWire is really on the way out and can be used with a thunderbolt to FireWire adapter for those who need it. It's not much of a problem for me. The adapter stays attached on the end of my FireWire cable.