If you're asking whether the connector will support a version of Windows that won't be released for at least a year or two, then I'm sure it will at that time. But that's a long way off. If you're asking if it will support beta versions of Windows 7, well, your guess is as good as mine. :)
If you're asking about whether WHS will move to use the Windows 7 platform as it's base OS, Microsoft hasn't shared information on that front. Same for Windows Server 2008. A future version of WHS will, I expect, wind up on a new generation OS, but who knows which one, other than Microsoft?
I'm not on the WHS team, I just post a lot. :)