No more than has been revealed to us so far.
Judging by the ‘teaser’ screenshot provided, that appears to be not the case, although it’s hard to say for sure. There is still one slot for ‘time-limited’ visitors, usually (unless there is a time-limited event, that is) populated by Toki and her daily quest — and that’s it for ‘dailies’ per se. Other visitors, marked as such, seem to provide specific ‘quests’, or tasks, but they probably don’t qualify as ‘daily’ — at least nothing has been implied about it yet.
It shouldn’t be long until the patch notes with the details are revealed, so I would just wait a little for them.
It’s ‘maths’, and I’ve probably forgotten more of it than most people on this forum have ever learned, as far as I can tell — so it’s funny to hear such things from random characters here.
Are you referring to total excess coins or those on individual maxed mercs? If the latter is the case, that’s unusually high — the most I’ve got on a single merc is around 20k for Bru’kan, and I used to do a certain bounty dropping them (yep, that one in Felwood) a lot.
Which ‘task’? If it’s the story — no, you can’t (it’s possible, but unlikely).
I was talking about game design there, apart from discussing a farming strategy that currently is more or less optimal objectively (without going into details), and, in my opinion, coin exchange, as said, should be a complement, not a substitute, for doing diverse bounties, if they are to make any sense — in others words, for there to be an incentive to do them in terms of rewards — at all. Incidentally, new tasks prompting players to revisit various bounties with specific requirements appear to be a step in the right direction in this sense.
Another point: if I were a developer, my priority would probably not be the kind of audience with the ‘I won’t play your stuf anyway, but you must give me everything’ attitude, for obvious reasons. So far the changes announced appear to be in the right direction for both current and new players (I’m more impressed with the task system rework than the lesser, in my opinion, matter of exchange, which appears to be more of a convenience feature for particular situations, as written previously, by the way), as for the implementation — remains to be seen; wouldn’t be surprised to see bugs at launch, as usual 
.
One more thing about the new ‘renown’ resource: I wouldn’t invest too heavily into exchange initially anyway, since it might be spent better elsewhere later — or at least so we’ve been promised.
(Some minor edits made)