TYPO3 Core

for the one in "About modules"-Module:
Change line 3445 in class.t3lib_befunc.php (in function TYPO3_copyRightNotice())
replace 2005 with '.date('Y').'

for the one in the Login Form:
typo3/index.php function makeCopyrightNotice() line 567 same change

in the "About"-Module:
typo3/mod/help/about/index.php function main() line 104
replace 2005' with '.date('Y')

Have a nice day.
Matthias

No, to simply display the current year is wrong! It has to be changed manually.

I've added a constant TYPO3_copyright_year into config_default.php and use it in the login page and the about module.