Sorry to say this, but I have to disagree on most posts here. I can't see anything evil from Canon. Canon release more bodies then the competition. The rebels are updated every year with small improvements while Nikon updates their equivalent every 2 years. Like many, I am waiting for the 5DIII, but as I have already mentioned before here (much before the earthquake) on a 3 year cycle we should expect the camera not earlier then Q4 2011 and can go up to Q2 2012.
Due to the quality of the latest Sony sensors being used on every body out there, together to the fact that we are approaching finite spec limits, I think that body cycle update time will increase.
by finite spec limits, I don't mean technology limits, but specs which can't be improved anymore since they are already at it's maximum (such as a 100% viewfinder) or improvements on specs which are already above most photographer's needs. This is in general, not just related to the 5D series. If the 5DIII will have the expected improvements, the 1Ds series should improve too. This is related to the whole body categories, and the more we approach finite limits, the less the difference between each body category, and hence an expected decrease in price difference too.
So, I consider all this as a normal cycle time, and not a delay, and doubt that the earthquake will have much impact on cameras which are not in production.