I'm also seeing more google results to G+ pages instead of the wikipedia page when searching for names, famous people, topics, places and so on. Coincidence?
Are you seeing them as organic search results, or as "social search" features added into the mix?
I can't say I've seen a lot of G+ pages as organic results, but they do seem to feel free to inject links to social media profiles when they're related in some way to a search result.
