Feature #1 is a queue status graphic (seen here), letting everyone know how long the approval wait should be — like the line signs at Walt Disney World, only far geekier.
Feature #2 is the presence of a new ‘all issues’ escalation email address, so developers with urgent bug fixes that need to be prioritized can get their questions answered — something that the Iconfactory’s Craig Hockenberry specifically asked for in his wrapup of the 1st-anniversary state of the store. This email channel has apparently been open for a week or two, but is now being publicized on the front page.
Several other tips & suggestions posts have also been updated in the past 24 hours, including notes on the keywording/tagging options and walkthroughs on changing your app name and assigning/adjusting the app’s rating. If you’re a registered developer, swing over to the Dev Center and take a look.