Starting with Ubuntu 12.10 there will be no more LiveCD. The reason is simple, there are increasing the size of the disc image from 700MB to 800MB. CDs can only hold a maximum of 700MB. This means that Ubuntu 12.10 and following will only be available on a DVD. This will again leave those with older computers in the dust, for a number of them can only burn CDs. I am sure many of the Ubuntu flavors will stay on CD, such as Lubuntu and Xubuntu.