Just got this e-mail from US - anyone had any recent experience. Is it an improvement, or an "improvement"... Ideally, instead of window or aisle, I'd like to be able to specify seats in my profile per aircraft depending on flight duration. That would be cool. A visible upgrade list would be on my wishlist.. Stay on top of your travel with easier upgrades We keep you updated every step of the way Over the last year, we've been investing in the products and services you want most. Now, we're excited to introduce new technology enhancements to deliver your Preferred upgrades. Behind the scenes To increase your chances to upgrade, our system checks for upgrades frequently throughout the day and keeps you notified right up until 24 hours before your flight. In your inbox We'll email your upgrade status to you, clearly showing your seats by flight. If you didn't get an upgrade, we’ll tell you why. Throughout the day, we’ll keep checking and email you if a First Class seat becomes available. Your favorite seat Prefer a window? Love the aisle? We'll do our best to match your seat to the preference you set in your profile. Look for our new Preferred upgrade email in your inbox before your next flight.