The recent changes to the Luton CZ will not appear on the CAA chart for ages.
Personally not too stressed about this as I am based nearby (live 2 miles from BNN) and well aware of it through the various announcements and have amended my charts by hand, plus it fills in a corner tucked underneath some other airspace so unlikely people will take a short-cut through this.
But, I guess it could also be seen as an accident waiting to happen if someone hasn't got the message about the new airspace and sees it as a handy gap on the chart in which to do some high-level work / aeros? The subsequent enquiry would be interesting but would probably put the blame on the pilot I guess...
Andy