In Ukraine President Viktor Yanukovych has signed a decree creating a Constitutional Assembly. The assembly will be headed by former President Leonid Kravchuk. The text of the decree is available in English here.
The details are difficult to come by but it seems that there will be an assembly comprising around 100 people from various parts of politics and society. The aim seems to be to produce a new constitution and not just amendments to the existing one.
At the moment, it seems as if the opposition is boycotting the process.