I would wait until it is offered as a Windows Update. Why? I'm a coward. Let others find the problems, (if any), and give Microsoft time to address these,
When installed it will automatically replace IE8.
The banking issue may not be an issue after all, see this forum's Sticky post for more information here;
However, if this issue is real, then it may not be addressed before it is offered to you via WU, so I would be prepared and download and install some other browser before going with IE9. That way you always have a backup browser to use for these important security required banking sites.
I hope that helps.
I came this morning after the big news of IE 9 release after the test version. I understand was out earlier, before the 3/17 official release date. I was hoping to find positive feed back on my question. The online bank issue would definitely be a problem for me since I partake of that conveience with my own local bank. I subscribe to kim Komando and she speaks highly of the new IE9 and suggests installing right away. So many good features added which makes it very competive with Fox and all the others. Especially security. Next question before I finish. Can I install over 8? Of course when the time comes and i decide to make the jump. Thanks. CNET is really a great online source for help in so many areas. We all need to be grateful to people who give their time unselfishly. imgrateful_1