You know what, that's just a bad business practice.
It's not good for WotC, and not good for Enworld, or the gaming community in general.
If Wizards keep publishing new Core books with the main motivation of profit, as opposed to fixing problems from previous editions, eventually, people will wise up and stop buying their books. I'm not shelling out my cash just to keep Wizards afloat. If the new books are worthwhile to purchase, I'll purchase them. On the other hand, if I don't think they're necessary, Wizards can go soak their heads if they think I'm going to waste my money on an unnecessary revision.
RPG's are not Magic. Nor are they cars. I'll buy something that's an improvement, not a "revitalization." Quality is what grabs my interest and money, not some zombie-like need to support a company which begins churning out crap, even if their previous products have been good. I want something new, not a rehashing of an old, third edition product. Put out third edition Planescape. Give me a guide on running a low-magic game. Churn out something different, that's never been seen before, something original, creative. Don't make me repurchase the same, essential product every three-four years, because I'm not going to do it unless I felt the original one was clearly inferior and needed revamping. That manner of marketing certainly isn't good for us; it's a waste of our money to support.
Thankfully, they're offering the SRD up for free. But it still stands that their motivation is bull, and shouldn't be encouraged.
I want D&D to make money, but I'm not going to mindlessly throw it away for them. An unnecessary revision isn't going to win me over. If the plan is to put out "3.5" now, then 4th edition a few years down the line, then that's a bad plan, not a good one.