Taiwan-based OEM PC makers have said they’ll not be able to start rolling out PCs with Windows 7 until September, since they’re still awaiting performance testing and system preparation tools from Microsoft as well as final validation tests from independent software and hardware vendors. Industry sources pointed out that, OEMs who want to include third-party software such as multimedia tools or anti-virus, etc., or drivers for specific hardware devices need to wait until after this time before they can begin to prepare their disk images. Microsoft Taiwan said that the RTM release’s being carried out as scheduled without delay, however, a spokesperson could not confirm that performance test and adjustment tools for Windows 7 were delivered at the same time as the RTM.