Our Withe Paper on
http://www.reactos.org/xhtml/en/dev_whitepaper.html says
The original target for ReactOS, with regards to
driver and application
compatibility, was Microsoft Windows NT 4.0. Since then, Microsoft
Windows 2000 and Windows XP have been released. Microsoft Windows 2000
and Windows XP are both descendants of Windows NT. As such we can
gradually shift our compatibility target without worrying about the
architecture changing too much. In fact, internally, Windows 2000
reports version information as Windows 5.0 and Windows XP as Windows
5.1. The ReactOS team have decided to maintain Windows NT 4.0 as the
official compatibility target. This is because most of the resources,
articles and books on Windows NT/2000/XP technology are written for
Windows NT 4.0. This does not mean that features present in later
versions of Windows NT based operating systems will not be implemented
in ReactOS.
Since we changed the reported version to Windows 2000, i'd say that is
not true anymore is it ?
Maarten Bosma