Yes, you can still use the Office Connector, the Notes Connector, but from my experience, what many customers REALLY want is the Windows Explorer integration that allows them to copy/paste files, etc.(also read Luis post ).
It seems that IBM will release an update the second half of this year (news from Lotusphere 2011), but I have no certain date from IBM.
I know many users getting pc with Windows 7 64 bit and they are, let's say, "frustrated" that they can't use the Windows Explorer integration.
Sadly I'm not alone, but "trouble shared is NOT trouble halved".