Or maybe they've only been working on this thing for a few months and were slavishly fixing bugs right up to the announcement, and IE6 support wasn't really a priority?
Except for Isolates -> WebWorkers, there's not really anything that can't be emulated in IE6. GWT has to handle a significantly more complex set of semantics and still works on IE6.
But personally, I prefer if there wasn't IE6 support, or any non-HTML5 browser support for that matter. If you're going to do a new VM, do a clean-break, because legacy support is another factor which makes web development a pain.
Except for Isolates -> WebWorkers, there's not really anything that can't be emulated in IE6. GWT has to handle a significantly more complex set of semantics and still works on IE6.
But personally, I prefer if there wasn't IE6 support, or any non-HTML5 browser support for that matter. If you're going to do a new VM, do a clean-break, because legacy support is another factor which makes web development a pain.