I have noticed that at the FAQ page that was posted earlier in this thread that the target page merely mentions compatibility for "the 81xx, 83xx, 88xx and 9000 series". The 89xx is NOT there. Not to be nit-picky, but if the target thread doesn't exactly answer the question why is that the default answer people seem to be giving out? I guess for the last months the assumption is that the 89xx somehow falls into this compatibility chart, which is fine, if you like to make assumptions.
I'm about to buy a 16GB card for $34.99, which I think is a great price. Just hoping it will work.
BlackBerry 8900 (T-Mobile USA)
BlackBerry 8320 (T-Mobile USA)
BlackBerry 8100 unlocked
BlackBerry 7100t unlocked