If so, when might it be expected please?

I regret there are no current plans for a new edition covering XSLT 3.0. Various reasons for this, the main ones being (a) the pressure on my time, (b) not many people buy books covering a new version of a mature technology, (c) a book covering XSLT 3.0 in the same format as the current book would be 2000 pages which isn't physically feasible, (d) people really want this kind of information online nowadays.

If I could solve (a) then I would do something that's electronic-only.

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference

Thanks Michael,
I'm coming back to XSLT after a while away (when 2nd Edition was current!)
- so with that forecast, I've just ordered a copy of the 4th edition and will bridge to 3.0 some other way.
Many thanks for your books & toolkits.