iTunes 9 does not show icon in Windows 7 taskbar?

"Unpin the older icon, close iTunes, re-open it and pin the new icon, drag the newly pinned icon back to the position on the taskbar you like.

Note: iTunes 9 works fine for me under Win 7 RTM, no icon issues."

"The issue reappeared after updating to iTunes 10.2.1.1 and could not be fixed with the mentioned procedures.

I was able to fix it following these steps:

Make a new shortcut to iTunes.exe in the Taskbar shortcut directory:

C:\Users\<your username>\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar

If necessary, change the icon of this shortcut
Pin the new shortcut to the taskbar

Observe that a duplicate of the shortcut is generated in the directory; this is the shortcut that now also appears in the taskbar.

Optionally, for cleanup, you can remove the shortcut made in step 1, and rename the 'iTunes (2)' name of the duplicate to 'iTunes'."

Technically since Win 7 is not yet released officially, they will probably have a bug fix release shortly after it drops. Yes they probably did do bug testing on the RTM edition.