Did you miss today's presidential press conference? You can see the whole thing here, but if you want to save some time, I have summed it up in the image below:
Basically, the president is under pressure from House and Senate Democrats who are up for reelection in 2014. They know the Obamacare trainwreck is going to hurt their campaigns, so they have convinced the president to put a bandaid on the disaster until they get through the next election cycle.
They also hope to stall the momentum of conservatives in the House of Representatives who are going to vote on a bill that would extend coverage indefinitely.
It is just a political trick. Remember this a year from now and don't fall for it on election day.