It's been happening for a while, it a voluntary removal from sale from what I remember, starting at the high wattage and moving down the the lower one's with the eventual phase out around 2011.
It only the sale of them, you can use them all you like.
I think a total ban (like some countries may be going to do) would be difficult as some areas (cars ?) need to use filament bulbs and the grey area's would be wide open. That and have you seen the cost of LED & CFL GU10's, they may not blow every other week but they cost a lot, the LED are still not bright enough and the CFL just don't fit in most the fitments.