Last post on IE for a while (I promise)
This MSDN technet chat was also brought to my attention via Zeldman and meshes well with what been said by Scoble et all.
As part of the OS, IE will continue to evolve, but there will be no future standalone installations. IE6 SP1 is the final standalone installation…
…Although this is off topic, I will answer briefly: Legacy OSes have reached their zenith with the addition of IE 6 SP1. Further improvements to IE will require enhancements to the underlying OS.