No Market Share movement for WordPress 3.0 yet sorry.
Get a list of 141,415 websites using WordPress 3.0 which includes location information, hosting data, contact details, 34,284 currently live websites
which includes 2,391 domains that redirect to sites in the list. 109,522 sites that used this technology previously and 16,018 websites in the United States currently using WordPress 3.0.
Distribution of locations of all WordPress 3.0 customers we've ever tracked.