I my opinion, it's a bad change. What was wrong with the long press on the home screen to access widgets, direct dial, etc? Having the long press on a home screen do nothing except something as frivolous as changing a wallpaper is a waste. The long press is intuitive, the app drawer is a buried, nested function...
Actually I don't like long-press that much. In the places where long-press brings up the context menu for a specific item (like in Messaging, etc.) it makes perfect sense. Having to long-press on the home screen to find widgets is
not intuitive, I'd say. If you think that getting to widgets by app drawer -> widgets tab is less useful or more time consuming than long-pressing the homescreen, hitting Widgets and waiting a moment for the list to come up, whatever floats your boat.
Edit: And as far as "What was wrong with the long press...", Matias Duarte said Google is moving away from long pressing toward gestural controls - just like how with HC and ICS they've moved from burying the options menu under the Menu button to being on-screen options and an overflow menu.