The Chinese have decided to restrict the number of people who can climb Everest on the Tibet side in the future. They have also strongly hinted that they will close the mountain for 2009 to remove the garbage.
In my opinion, the Chinese are trying to appear progressive and environmentally conscience but in reality they are really just trying to further their own political agenda. It is oddly coincidental that 2009 marks the 50 year anniversary of the Dalai Lama's forced exile from Tibet. Furthermore, China has not shown any concern for the environment to date. In Tibet, there is major deforestation, dumping of nuclear waste, and lots of mining going on (http://www.mounteverest.net/news.php?id=17375) - far greater environmental concerns than tourist garbage.
I have to ask myself the question who will be removing the garbage - the Tibetan sherpas?