As of today it appears the google onebox w/ the google maps insert has been dramatically expanded to include organic local type search queries that include state names and secondary terms for businesses.
This is a significant and dramatic expansion of the Google Onebox and the importance of Google maps. The onebox now dominates the first page real estate for a much larger percentage of queries.
All of this makes ranking w/in Google Maps more important, expands the terms and language for aranking within Google Maps, and simultaneously makes advertising directly with Google far more important.
I think it further reduces the importance of verticals and IYP to the extent they depend on traffic off of high Google serps rankings.
Definitely something to check. Its a big move by Google.