prosfilaes
Adventurer
Well, to be fair, D&D is hardly the biggest offender there. You'd imagine by now SJG would have gotten to GURPS: Rocks, Plants, and Trees.
They rebooted everything in 2004 with GURPS 4th Edition and haven't even got back to GURPS Cyberpunk. The solution of most major game publishers seems to be, produce books until you're producing pretty marginal books and reboot the system and sell all those splat books all over again. I'm happier with SJG (who gave us 16 years of GURPS 3e ... or 10 if you want to count the massive errata on everything non-core that was Compendium 1) than companies that do the reset every three years or so.