Wave goodbye to them.
In an upcoming patch*, those daily quests will be turned into weekly quests that will reset every Tuesday morning at 3:00 a.m. Crygil explains that the honor and number of Stone Shards will be increased along with this change. There is no indication if the amount of gold will be increased, however I doubt it will change significantly from what it is.
There are two additional "known issues" with this change.
First, the quest mark "!" will show over the quest giver's heads instead of a "?".
Secondly, when the quests reset at 3:00 a.m. on Tuesday, players near the NPC will need to move out of line of sight of the NPC in order for the quests to appear.
My guess is that each week there will be a "new version" of the quest, so to speak. This "new version" is exactly the same as last week's quest, but just has a new quest ID associated with it. This would explain both "issues" that Crygil mentioned.
We'll have more on this tomorrow, or when we get new information in. Look for the exact quest objectives and rewards then (this information has not been released yet).
*Update: These changes have appeared on the latest PTR patch this evening. Given that, and additional comments from Crygil tongiht, it seems unlikely these changes will go live tomorrow.