We will find out this week. Something significant may happen, but I do not believe it will be the rapture. The Bible says there will be a GREAT deception (Matthew 24:24) in the end times and the man of lawlessness must come first as written in 2 Thessalonians 2. The Pre-tribulation view has only been around since the 1830s, there are no teachings before that. If there were any teachings on end times, like the Didache (50-120 AD) in chapter 16, it clearly taught: anti-christ, suffering of faithful and then the Parousia of JESUS CHRIST and HIS saints.
http://www.earlychristianwritings.com/text/didache-roberts.html
If born-again CHRISTians are still here after Sept 23rd, please consider the Pre-Wrath viewpoint. I know you said in your post that you were not date setting, but here are a couple of sites that layout arguments and unpack the Pre-Wrath viewpoint really well and I encourage every believer to review/study...
http://www.generationword.com/audio_series/Titanic_Faith.html
The way we view the future does affect how we act. May all that we do glorify JESUS CHRIST!!!