Finally, I have speculated this with all the current resources available.
EA decided not to release the ICC Cricket 09 because they know that their game won't be able to compete Ashes Cricket 2009, which is true as Ashes Cricket 2009 is currently the best game ever released , according to all the previews and reviews. They might release the game next year with the licenses of ICC or probably late this year also with some improvements.
If Ashes Cricket 2009 will fail in terms of system compatibility then EA will have a big chance because something like this happened with BLIC 05/07 which forced people to go with Cricket 07 as that was the only arcade cricket game in year 2007.
I also got this information from somewhere that EA will not respond to any queries regarding ICC Cricket 09 at all until and unless you are a representative of a very big company like Gamespot or you know one of their Communication Manager very well.