Yeah, I agree, canned response. I got the same message today, and my application is still a month away from the current CSC receipt processing date posted today. The IMBRA RFE response seems like it is worded generically towards the original purpose of a standard RFE, which before IMBRA, was sent out during the actual live processing of your petition by a case officer. Thus, the phrase "preliminary processing" was mentioned. Well, I hope I'm wrong and they actually somehow skipped forward to processing my petition ahead of schedule. Regardless of the stage of processing, it seems like most everyone that submitted the previous I-129F form, was automatically sent an IMBRA RFE, if the USCIS received it after March 5, 2006.