A new set of plugins have been added to the servers to replace the functionality of cross-server chat. Universal channel has been returned to supporting chat from all servers. Additionally, Global is now sharing between Agharta and Classic. As a quick roundup...

Universal Chat

- Hub, Agharta, Classic, Creative, Events, Prison, Pvp, Skyblock

Global Chat

- Agharta, Classic

Please note that while viewing one of these channels on a connected server, messages from other servers will have an indicator at the start of the chat line that looks like

The plugin being used for this is a customized version of a public plugin. It has passed some basic testing to provide the desired functionality, but it's possible some fresh bugs may still be discovered. Please do report the bugs as you find them. Constructive feedback is also welcome. <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/1f642.svg?0" type="image/svg+xml" standby=":)">:)</object>

On a side note, we are aware that the cross server '/tell' messages are not working. This feature will be returned in the future, though I don't have a specific date for when yet.

Update: The duplicate message problem should be resolved.

Once the FTB server gets released is there any plan on incorporating it into this?

Currently the answer is no. That doesn't mean "never" though. Just even if that idea gets serious consideration, it would be necessary to develop an additional plugin to account for FTB not being one of the connected servers.