I have a five plus year old iMac PowerPc G5 which still runs rather well. I don't necessarily have a need to purchase a new computer as I use my iPad 98 percent of the time while at home. The iMac as you can imagine is not compatible with my iPad 2. When the new iOS upgrade becomes available in the fall along with subsequent updates, will I need to still connect the iPad to the computer via a USB cable? Or am I correct in assuming that I'll be able to get new updates wirelessly starting in the fall?