Hasbro has confirmed in the Q&As that there will be "Midnight Madness" type events at the various retailers, but those retailers have not made them public yet... examples:
There will indeed be similar activity as during Episode III, but the exact nature has yet to be determined. We will keep everyone informed as the details shape up.
Yes indeed, retailers are shaping up their plans and there will be activity similar to 2005 and the launch of Episode III toys. As for specific details, it is too early to talk about it but as things take shape we will keep fans informed.