The Monetary Union: The Decade Ahead. The Case of Non-Member States

What are the prospects for New Member States to join the euro-zone in the not too distant future? They seem to be in a catch-22 situation Because of the current financial crisis some Maastricht criteria would be more difficult to fulfil in the short and medium term, which would make it hard for them to join the eurozone. But there is also an argument, which highlight benefits of a faster accession due to dynamic effects for the countries involved and for the eurozone as a whole.