Opera/Safari Support: Finally, the basic webmail option supports Safari and Opera users! Yay! I'm extremely pleased that this has been addressed by the development team. As a Mac user myself, it drove me batty to type in the URL of my webmail only to be reminded that my favorite browser wasn't supported. If you are using either of these browsers, you will automatically be logged into the basic webmail interface as the standard version that uses AJAX/DHTML is not yet compatible with either of these browsers.
Domain Direct Upgrade: Thankfully, we are almost done. We are upgrading the last two batches of customers this weekend starting Friday night and going until Mid-day Saturday. Once completed, all customers will have had their accounts upgraded - most without incident. Someone mentioned in the comments that we should have been clearer in our upgrade notices to customers who are not using Domain Direct for DNS. Definitely a great point. I will be making a separate post outlining what steps you will need to take to update your DNS to make sure that your upgrade goes smoothly.
Netidentity: It looks like we will be starting the upgrade on December 5. It will need to happen over a period of a few days. These details will be ironed out and we will start sending out notices to all of our NetIdentity clients detailing the timing and impacts very shortly.
Webmail speed: The hosted email team is implementing some server side compression that should make the webmail client perform snappier. This upgrade will be happening on Saturday shortly after the final Domain Direct upgrade occurs.
Spam filter changes: Later on today the hosted email team will be updating the way that messages marked as spam get stored in your spam folders. Right now, the webmail system relies on a filter to move this mail around. With the update later today, this will be performed transparently.
More updates will come as I get more information.