I haven't heard anything about Rolland at du Tertre. But certainly in mid to late 90s there were some changes at du Tertre. A more modern wine. One can debate whether that is good or bad, but for my tastes results have been mostly positive. I'm sure they use more new oak than before, but it doesn't seem intrusive at all (at least in the '98-'01 versions - I own a couple bottles of '02 but don't think I've tried yet). Ch. du Tertre seems to have good terroir that they haven't always used well. I've had nice examples of older vintages ('79, '82, ,83), but in some years big disappointments. While I probably would be classified as a traditionalist, if I had to be put in a camp (I don't buy new versions of Pavie or Smith Haut Lafite), the newer du Tertre seems pretty tasty to me.