quote taken from the xecuter home page
"currently working on a final X3 Bios before the 360 comes out, adding a few features and fixing a few bugs. There will probably not be another X2 Bios unless there are any major bugs that require fixing - we havn't been notified of any as yet. There have been a total of 16 bios releases from Xecuter this year, one hopes that has satisfied the majority."
so the answer is yes