EA that probably aren't thrilled about the Playfish acquisition. Gamasutra reports that significant layoffs have taken place at EA's Tiburon, Redwood Shores, Black Box, and Mythic divisions. Gamasutra suggests that the layoffs exceed the scope of EA's normal annual layoffs. We're attempting to verify the actual percentages with EA.
According to a tweet by Katherine Pitta, "Mythic Entertainment, responsible for Warhammer Online, just laid off 80 people, about 40% of it's employees." Former EA employee Eron Garcia estimated "HUGE chunks of EA" have been let go. Mythic has been subject to layoffs in the past, as has Need for Speed and Skate developer Black Box, which already had its studio closed last year as part of another widespread round of layoffs. Best of luck to everyone affected by the layoffs!
[Update: Approximately 1,500 people have been or will be laid off as a result of this year's cuts, EA reports in its earnings statement. Last year's "major" restructuring resulted in the loss of about 1,000 jobs.]