Just 2 days from official release of Windows 7, Lenovo released couple of Windows 7 32 and 64 bit compatible drivers. Lenovo site is quite confusing when it comes to drivers and applications, some SL500 applications and drivers for Windows 7 can be found here and this link will take you to Lenovo Windows 7 BETA, RC and RTM applications and drivers.
Official explanation of drivers and applications availability has been posted in Lenovo forums. Here is C/P:
Ok, This is pretty much as "official" as it’s gonna get. Lenovo will post final Win 7 WHQL certified drivers on or about October 22 to coincide with the official Microsoft release date of Windows 7. Lenovo will begin supporting (via the hellpcenter) our Windows 7 preload and the Windows 7 upgrades. I am not sure of our support for Windows 7 RTM code, but will send the question up the chain.
Lenovo Windows 7 Test team
Lenovo Enterprise Systems Expert.