Mehsud has planned and threatened to bow up karachi and lahore after Peshawar. They will target high value target but in order to scare people, they will target shopping centers, schools and Mosques.. Although they have planned to attack in next one week but I reckon that they may blow few small pathakhey after all the alert but as soon (after a week or 10days) when all our ISI and Police start relaxing or lazying, thinking that they have stopped those explosions due to their water tight security etc then these guys will BLOW UP (When least expected)
These explosions won't be just sucide explosions but they will be accompanied by 2-4 Mujahids who will fire randomly to make a clear route for their bomb laden vehicles.
Like Peshawar, they , might blow up on a smaller scale and just when the rescue services and common people are helping the injureds, then they will have the bigger bomb/explosion.
So Please Be CAREFUL and Vigilant! Also this is also another way to isolate "Pukhtoons" from the rest of the country so that they are forced to join them after racial riots which I am expecting after such incidences...