Clicking on "View All Trips" takes me to the "Manage Reservations" page in the old layout.
Regarding Economy Plus buy-ups, the new layout seems to pushing purchasing an Economy Plus Bundle rather than buying up to a specific seat and its specific (and lower) price.
Previously, there would be a link with a message indicating that E+ was available "from $XX" (where$xx equals the lowest priced E+ seat), in addition to any links to available E+ bundles. Now, on a one-way reservation, I am only seeing a box at the top with "Stretch out in Economy Plus", the bundle price, and a "Learn More" button that leads to the page for purchasing the bundle. The E+ only bundle price is $105, yet individual E+ seats are available on the seat map from $86 to $107.
On another one-way reservation. the E+ only bundle price is lower on the page, under a "Popular with Travelers Like You" section with links to multiple bundles. The E+ only bundle price is $88, yet individual E+ seats are available on the seat map from $53 to $89.
And on yet another R/T reservation. there is the box at the top with "Stretch out in Economy Plus", the bundle price, and a "Learn More" button that leads to the page for purchasing the bundle. The E+ only bundle price is $90/$97 (inbound/outbound), yet individual E+ seats are available on the seat map from $69 to $97/$75 to $105.
This change seems deceptive. There are now only links to a higher priced bundle, and NO indication on the main reservation page regarding the price of individual E+ seats.