This announcement comes as good news to a community looking for some unity.  Soon, Q4Max should be releasing their updated version that includes the fixes and modifications used at the CPL Winter Event played last weekend.  Here is the official release from Clanbase.

Clanbase | Press Release

We're sure you're all aware of the current issues with the "competition" between Q4max and the newest X-battle. At ClanBase, especially after receiving statements from CPL players playing in our EuroCup(s), we felt it necessary to discuss the future of Q4 dueling on ClanBase.

(The remaining matches will be played with the aforementioned CB config (basically vanilla Q4 with the shotgun fix), no more vote is needed to change the 1v1 settings. You can still vote on settings for the other gametypes on the proper cuppages)

We had a long discussion, and without going into much of the irrelevant details, the outcome was this; we WILL use Q4max from now on for 1v1, BUT the EuroCup group stage has to be finished with X-battle, mainly because of the number of overdue matches from the past weeks. The idea behind it is that there shouldn't be situations in which some players were allowed to play more matches in Q4max than the others. We really hope that the players can find themselves in this decision. It might not be the best solution for everyone, but it should be the fairest. We encourage the EC players to stick with us for these last two matchweeks.

Our main motivation is to set a standard for Quake 4 dueling, in accordance with the CPL World Tour, so that duelers won't be divided between two mods for one gametype. However, as Q4max mainly focuses on 1v1, and X-battle is still a better mod for CTF and TDM (with features such as the teamoverlay, custom team colors, team commands, visible ready-status, etc.), the ClanBase CTF and TDM tournaments will keep on using X-battle.

For the ClanBase tournaments in short: the 1v1 EuroCup will use X-battle for the remainder of the group stage and Q4max from the start of the playoffs, the 1v1 Open Cup will use Q4max from the start of the group stage, the TDM/CTF tournaments will keep on using the X-battle mod (for which you can vote on the appropriate cup pages if you feel that we should change the server settings).

You can download the most current version of Q4Max here.