World of Warcraft 2.4.2.8278 has been released as we all know, Here is the direct download link to the patch (Source).
WoW-2.4.1.8125-to-2.4.2.8278 Direct Download Links:
WoW-2.4.1.8125-to-2.4.2.8278 | enUS-patch
WoW-2.4.1.8125-to-2.4.2.8278 | enGB-patch
WoW-2.4.1.8125-to-2.4.2.8278 | deDE-patch
WoW-2.4.1.8125-to-2.4.2.8278 | frFR-patch
WoW-2.4.1.8125-to-2.4.2.8278 | esES-patch