Yes! Export to PDF is high on our list of things to do. Thanks for letting us know that this is something your are interested in. It's very helpful feedback.
Do you already know, when the update for PDF-Export will be released?
There is already an option to export your artboards to PDF. However, the option to export any selected layers to PDF has no definitely timeframe for being released in PS, at this time.
That's too bad , because we would need it quite urgently. Especially because we already use export by naming the layers for SVG (Android and WP), so it would be so convenient for iOS as well. Maybe you could enforce this feature in your roadmap, I think it would be often used