Ethereum DAO hard-fork on july 20th

Parity and Geth have a date for the hard-fork

Hello Community,

Both clients, Parity and Geth have a hard-fork implementation for The DAO now, which is not yet released but can be expected soon.

Both set the date of the hardfork to uuuBlock number 1 922 000.

This will be shortly before the 21.07., which is the date in which the attacker can split (See the important deadlines in this post by Christoph Jentzsch).
What does this mean for other clients?

Other clients like pyethereum, or libethereum already started their implementations of the hard-fork, so it is certain that they will release a new version including the hardfork with the same date.
What does this mean for me as token holder?

The funds of the whitehat DAOs and blackhat DAO will be moved to a withdrawal contract, in which one will be able to withdraw his or her share of Ether.

Yet this means that innocent child-DAOs will not be included. People that split in such a child-DAO before the attack would need to do a regular split, this affects ~ 34,000 Ether. People who split after the attack, the best thing is to join the slack and join the #child_dao_community channel for further coordination.
What happens to the extraBalance?

According to Vlad Zamfir on Reddit, the extraBalance will be “returned to purchaser”; anyone who can prove that she bought tokens during the creation phase at a higher rate of 100:1 should contact the curators and will get their contribution to the extraBalance refunded.
What do I have to do as a token holder?

At this moment there is not much more to do than waiting a bit longer and wait for the updated clients.