According to information from a leaked roadmap of the next iteration of Windows Live Essentials, Windows Live Messenger Wave 4/2010 is up to Build 15.3.2649.311. Francisco Martín Garcia, Microsoft Active Professional 2010, Microsoft tester, has published the development process timeline of Windows Live Essentials Wave 4 indicating that the next version of the clients and services are moving along nicely. The current build of Windows Live Essentials Wave 4 had reached 15.3.2659.319 at the end of the past week, indicating that Microsoft is still in Milestone 3 stage. The Redmond company is expected to open more dogfood builds of Windows Live Essentials Wave 4 to a select number of testers on April 28th. Microsoft itself is, of course, dogfooding Wave 4, but so far has not made public any plans or delivery dates for development milestones. According to Garcia, Windows Live Essentials 2010 is planned to reach Milestone 3 on May 18th. It will be on June 3rd that Microsoft will offer the public the first details of Windows Live Wave 4, with the first Beta release, apparently scheduled for June 7th.