Not as meaningful as it seems.
Fragment of a discussion from Comments:Hosni Mubarak steps down as president of Egypt
For the military to screw this up now, would probably mean war. I doubt the US would have allowed this to happen if there wasn't some diplomatic assurance of certain measures, especially from the military. This was planned out and speeches wrote 24 hours ago. Mubarak didn't just have an epiphany. Besides, elections, technically by the constitution as it's written, would take place in 60 days.