I plan to use XML/XSLT in my iPhone application.
What version of XSLT is currently supported on the iPhone? Can I use XSLT 2.0 or just 1.0 ?
As Lou Franco points out, you're not allowed dylibs on the iPhone.
It'll work fine in development both in the simulator and the phone but it'll be rejected as soon as you submit it to Apple for approval. My app was rejected within about 20 minutes, presumably by their automated static analysis tool.
Instead, download the source, add it to your project, link the LibXML2.2.dylib (don't ask me why this dylib is allowed but the XSLT isn't!) and build the project. That's pretty much all you have to do. Credit to Lou for this as it was he who pointed me in the right direction.