I have a question for anybody who's familiar with the technology for these type of networks on AT&T. I know that HSPA is the technology for regular 3G and that HSPA+ is basically 3G on steroids and the beginning of what AT&T is calling "4G" even though they're also working on LTE (Which is a lame acronym by the way). I know that current iPhones support HSPA and need a new chip or radio to handle HSPA+. My question for the forum is about how AT&T upgrades to HSPA+. Is it something they just have to "turn on" for towers that are already 3G enabled or is it a hardware upgrade? I ask because my area will be just getting 3G in about month and I'm considering upgrading to an iPhone 4 now instead of waiting for the iPhone 5 (or whatever comes out this summer) just to get access to a network I won't be able to use every day (assuming the the 5 or whatever has the HSPA+ chip in it.