Developers and IT managers have reason to smile today, because it looks like Apple is changing its approach to virtualization . According to Mac Rumors, users who download the client version of OS X Lion will be able to run one or two virtualized copies on a single Mac, using tools like VMware or Parallels . This functionality first surfaced with Leopard, but was only available to users who obtained a pricey OS X Server license. The EULA for 10.7, however, suggests that Lion owners won't need any extra licenses to tinker away in an alternate OS universe. It's news that the enterprise community will certainly welcome, but we'll have to wait a little longer before riding the Lion into a virtual realm, later this month