Well, this is a good piece of news for 10-man raiding. Weapons that drop in hard-mode Ulduar-10 fights are being buffed from ilvl 226 to ilvl 232, a jump of half a tier. Players who have these weapons already will see them adjusted. This puts the Ulduar-10 hard-mode weapons on par with the Ulduar-25 normal-mode weapons, a situation that was already the case for armor rewards (Ulduar-25 normal-mode weapons have always been ilvl 232).
My own casual-ish guild is only four bosses into Ulduar at the moment, so this doesn't affect me personally, but it makes sense to see hard modes drop quality rewards. I wonder if this will increase the number of guilds attempting them. Now how about a shot at Val'anyr, eh? Or perhaps a Druid tanking idol somewhere in Wrath before Ulduar-25? Yeah, I didn't think so.