Filed under: Desktops, LaptopsThough we originally expected (read: hoped) that Microsoft would dish out Service Pack 3 for Windows XP late last month, it seems the deed may actually get done before May dawns. According to an "internal schedule" fetched over at Neowin, OEMs, volume license, Connect, MSDN and TechNet subscribers will have access to the update on April 21st, while most average joes / janes won't notice it until April 29