Good news, Kobane is already cleaned out off IS terrorists. The last attack seems a very desperate in nature, a failed attempt and an illusion, that IS is able to create any sizable offensive. However unlikely it might seems, when considering reports about army of fighters arriving there from around the world, they might be running out the fighters. IS have a very long front line, a price to pay when one declares a war on every neighboring country and ethnicity.
They need to fight around Syria, man the border with Jordan, many thousands are fighting Kurds, many more fight Shia Iraqis, plus they fight many Sunni tribes who don't like them, and last but not least, it takes an army of people to keep all the conquered population in constant control and fear. Thy have tens of thousands of fighters, but they are stretched to a braking point.
Shortage of fighters could be behind the change of their tactics. Recent attacks on Ramadi, Kobane and others, carry more of a resemblance to terrorist attacks, with small groups of suicide bombers, than attack of a regular army. They can't use their heavy equipment either. It was drastically reduced by ally bombing campaign, and what is left is hidden away for protection. They can't even move around big battalions of men with equipment, for tactical and offensive purposes, or they would be destroyed from the air.
For the lack of equipment and man power they need to rely more on terror attacks than ever before.
I think their offensive is over, they are grinding down to a halt. From no one we should see IS retreating and losing territory. They should collapse in a year. Allies main objectives should be delivering heavy weapons to Kurds, whipping Iraqis soldiers into something resembling a fighting army, and making sure Turkey plays fair.
I wonder what will happen with all the land in Syria, which possibly will be liberated by Kurds and Iraqis/Iranians? Surly they won't give it to Assad, right? I'm only sure about Kurdish part, the rest will be up for grabs and new power vacuum straggle.