The main page of the Foundation website http://wikimediafoundation.org/ and the Quarto newsletter http://meta.wikimedia.org/wiki/Wikimedia_Quarto are other good sources for Foundation news. There is also a Foundation-news mailing list for announcements http://mail.wikipedia.org/mailman/listinfo/foundation-news-l, though that might be being used only for Quarto-related announcements, and so far hasn't been used at all.
Angela.