Pop over to the Play Store website on your computer real quick. I'll wait. Notice anything different? It's very likely that you're seeing the new app pages that started showing up months ago for users who weren't logged in. Now it sounds like almost everyone has the new look (everyone at APHQ is seeing it as well).
The new layout has a narrower main column with app info, and the similar app suggestions and other apps from the developer in a second column to the right. If your window is too small, that second column will move to the bottom, though. This means the content for the app you're actually looking at will occupy less of the screen, which is sort of confusing at first. Update: Looks like the +1 counter has also been moved to the very bottom with "Additional information." It used to be at the top.
If you don't have the new layout yet, just give it some time. It looks like Google has finally settled on this. As with most things, I'm sure there will be discontent with the change at first. Eventually, we'll all adjust.