Wrath of the Lich King received a new update yesterday, version 3.4.3.54261. There was no prior communication about an update, and there has been no official posts about what this new build includes.
One undocumented change that has been noticed, however, is that Blizzard has increased the Character Gold Cap from the previous ~, to. This is most likely to prepare for the launch of Cataclysm Classic, as the Gold Cap was increased to that amount when Cataclysm was originally released in 2010.
Characters are no longer capped out at !
The Guild Bank Gold Cap has also been increased to with this build.
As players have been getting more effective with gold farming, and with the popularity of GDKP runs in Wrath Classic, the cap increase might come as a welcome relief to players. Some have previously voiced their thoughts on a higher Gold Cap being needed for the launch of Wrath Classic, citing better ways to earn gold and the previously mentioned GDKP runs as arguments to increase the cap.
Blizzard responded to this kind of feedback, saying that they had no intention of increasing the gold cap for Wrath Classic. While we are technically still in WotLK, this change can most likely be attributed to Cataclysm Classic being on the horizon, rather than Blizzard going back on their word.