What is wrong with "the next iPhone"?, "the new iPhone", "the iPhone rumored to be released in June", etc.
It's not us, really, who have mis-named the next iPhone. It's the press. They've led the charge to call this thing "4G". And I think that it's because it gets attention. Consumers have heard the term "4G", know it means the "next generation" network with much faster data speeds, and read the article because they think the next iPhone is going to have it. Consumer is disappointed, gets bored and reads ads, publisher profit$.
You don't know how many people have either told me that the new iPhone will support 4G networks, or asked me to confirm the same. I have had to explain that nobody has a 4G network yet, that Sprint's "4G" in some current phones uses a standard (WiMax) that they DON'T intend to adopt as the core of their 4G strategy (they have announced their intention to transition to LTE, but are using WiMax to provide fast data service as an interim measure on a limited selection of phones), and that Apple is unlikely to release a phone with LTE support now to "support future networks".
Articles titles should read "New iPhone Model Rumored to Have Double-Resolution Screen", not "iPhone 4G Rumored..."