It's so simple...
The images plainly reveal what Apple is going to do.
The calander image lists "Tuesday", which, as we all know is borrowed from the Latin des Martis, which associates the day with the planet Mars--the fourth planet in our solar system. Couple this with the number four in the image and you get two 4s (or 4S). It's plain to see that Apple will be announcing an iPhone 4S, rather than an iPhone 5.
The second icon shows a clock, which replaced the sun dial centuries ago. This represents the iPhone 4S being powered by the sun via solar panels.
The map shows two intersecting yellow lines which, if zoomed out, would form a cross. If you remember, the original iPhone was dubbed the "Jesus Phone" by many fans. The symbol here shows that the new iPhone will actually fulfill this fanboy wish, in that it will allow the user to speak directly to God.
And finally, the phone image shows a white phone, along with the number 1, which represents the fact that the new iPhone will only come in white for the first few months, likely due to a painting-process error on the black versions, similar to what delayed the white iPhone 4.
It's all so simple. It's right there for everyone to look at; you just need to open your eyes.