No Market Share movement for WordPress 3.4 yet sorry.
Get a list of 470,589 websites using WordPress 3.4 which includes location information, hosting data, contact details, 95,466 currently live websites
which includes 15,635 domains that redirect to sites in the list. 390,758 sites that used this technology previously and 35,496 websites in the United States currently using WordPress 3.4.
Distribution of locations of all WordPress 3.4 customers we've ever tracked.