A good post from CDM on some of the issues around cross-platform development from Peter. It goes into a lot of detail, but the one thing it doesn’t do I don’t think is give any definitive answers as to which of these tools might get excluded by Apple (apart from Flash of course).
Time will tell and the story will unfold in the coming days. Will developers jump ship? Not sure, I don’t think so, but please get in touch if you have views.