Karl Waclawek has released SAX for .NET 1.0, an open source port of the Java SAX API to C# and .NET 1.1. An implementation of this API based on expat is available, but is not compatible with Mono 1.0.2.
YesLogic has released Prince 4.0, a $295 payware batch formatter for Linux and Windows that produces PDF and PostScript from XML documents with CSS stylesheets. New features in 4.0 include XHTML style and link elements, PDF compression and Font Embedding, Automatic table layout, Shrink-to-fit floats, block alignment and negative margins, and word-breaking at soft hyphens.