The article to which you have linked refers to an “action plan” written by the state secretary of Economic Affairs and supported by the state secretary of .. to accelerate the adoption of open standards and usage of open source software.

Although the government has made agreements with municipalities and other government bodies to consider open standards and open source software as a first choice, the announcement does not mean that the government will drop Microsoft documents for ODF immediately. Nothing has yet been signed into law (with the exception of open standards and open source being mentioned in the government plan for the year).

So, in short, the announcement points to an intention to stimulate OSS and open standards, but we’re quite far from every government machine running free software exclusively (or even partially).