I wouldn't hold my breath as there haven't been any leaks or significant mention of verizon testing anywhere. I'd still guess it'll be late november, early december before we see anything.
There's already a hack for Android 2.1 that could very well take out Verizon's Wireless network, so I'm hoping they will get the ball rolling now:
meh, there's nothing really to worry about imho. From reading the link, it's more of a browser vulnerability and I'm not really sure why anyone would use their browser to access anything on the sd card.
Currently there is no information on the release date for a Samsung Fascinate Operating System Update. We thank you for your patience and being a Verizon Wireless Customer. We assure you the security of your device is very important to us and any enhancement or update is developed with security concerns in mind.