Willie,
I can't wait either - I need the money! Seriously, I don't know when there will be another edition. Almost certainly it will be sprung upon me with a few weeks' turnround and a very limited budget for new art work. I raised the subject some time ago on this site and I had a fantastic reponse of positive criticism, helpful suggestions etc. I have them all filed away waiting for D-Day, as it were. I just hope there's the budget to accommodate some of the many very positive suggestions as well as eliminating howlers, gaffs and pure ignorance.