The much-talked about Yahoo (NSDQ: YHOO) layoffs are now official: it will slash its workforce internationally by at least 10 percent during Q4, with a goal of reducing costs by more than $400 million by the end of 2008, the company said in its Q3 earnings announcement today…that means around 1,400 or so employees will lose their jobs. The beleaguered company also plans more cost-cutting during 2009.

Update: Yahoo closed Q3 with 15,200 employees, according to its earnings presentation, so that could mean 1,500 jobs—but this could be handled with a mix of layoffs and position cuts. More from the earnings call.

• Yahoo Planning Major Job Cuts; Could Be Above Thousand