A while ago the European Commission asked for a universal charger. Several manufacturers of mobile phones have agreed on a charging standard; the micro USB.
At least, this is what the GSMA, the branche organisation of manufactures of mobile phones, is indicating. 17 manufacturers have agreed upon the standard; from 2012 almost all phones will have the so-called UCS, Universal Charging Solution. Among these manufacturers are Nokia, Sony Ericsson, LG and Motorola.
European Commission
Some weeks ago the European Commission had a request for a universal charging. It seems that the UCS has become the standard without any political difficulties. The reason for a universal standard is not just the comfort and ease for the consumer, you will never have the inconvenience of having a charger that is incompatible with your new phone, but also the environment will benefit.