A copy of the encyclical has been leaked to the Italian press. A copy can be seen here, for those who speak Italian. Maurizio advises that his impression is very much that this is going to be seen as a damp squib. He points in particular to this paragraph (translated mostly by Mr Google):
For poor countries, the priority should be the eradication of poverty and social development of their inhabitants; at the same time the scandalous level of consumption of certain privileged sectors of their population must be considered and better counter corruption. Of course, they must also develop less polluting forms energy production, but for this they have need to rely on help from countries that are grown much at the expense of pollution today the planet. The direct exploitation of abundant solar energy requires that you establish mechanisms and subsidies so that developing countries can have access to technology transfer, for technical assistance and financial resources, but always paying attention to concrete conditions, since the compatibility of the systems with the context for which they are proposed is not always properly assessed. The costs would be low when compared to risk of climate change. In any case, it is above all an ethical choice, based on solidarity of all peoples.