Updates made:
* Arena performance improvements - This one is pretty involved. Before, even when you were playing, other users in your arena who were looking for games would generate traffic which you received - and if there were a few of them, it could generate lag. What happens now, is that when you are playing and your status changes to 'busy', you will no longer receive broadcast traffic from other users. This would be great, apart from some games where people can join once the game is in progress - obviously if you're playing and 'busy', nobody else will see your game. In this case, it's crucial that you set your arena status to 'Hosting' - so the kaiEngine will know to allow broadcast traffic through.

* Multi-UI Update / Switching - You'll notice a couple of new bits in kaiConfig - most notably a choice of ui. For now, only default is available - but I'll merge in the kaiKart component and a few more as time goes by.
* Wireless / WET11 Translation - Yep, finally got it in. Simple set up the MAC partnerships in kaiConfig, and play as normal. Thanks for everyones patience with this one.
* Arena Favourites - A mechanism whereby you can mark arenas as 'Favourite' - allowing you to check how many people / private arenas are in them without leaving your current arena.
* XBox homebrew DHCP Toggle - XBox dashes were being confused when they got 10.252.X.Y IP addresses - this is now turned off by default (you can turn it back on in kaiConfig). Remember - you DO NOT NEED IT to use a dash as a kaiUI - it's only for legacy homebrew stuff like XPort Emulators etc.
* Remodelled Chat - The chat window has been sexed up a little, with colours and a friends filter - which when enabled will make everyones chat light grey, apart from people on your contact list, who will be black. You can also turn on a little bell sound to indicate someone entering / leaving an arena, as well as saving / clearing chat with the little buttons on the top right.
* Language Translation - This is pretty awesome. Say you're in a chat room with a lot of foreign speaking users. The game looks *awesome* but you dont know how to ask if you can join. Now you just choose 'English -> Spanish' from the dropdown and type your chat messages in English. They will appear in the chat window in Spanish!
* Arena Content - Each arena can now hook into its own specific web-content - shown in a small embedded web-browser in Kai. To begin with, content is gonna be pretty sparse - non-existent maybe - but we will link in the existing ladders, as well as some pretty funky new stuff over the coming weeks.
* Invites - Invite someone from your messenger contact list into your current arena.
* Speex in Arena - Implemented at last, but I decided to limit who you can talk to in Arenas to people on your contact list. Seriously - if we just opened it up for everyone, millions of people would start bitching about how 'badly Kai lags' - because they undoubtedely had like 300 speex connections open at the same time. This should allow people to get what they need from Kai's voice support, without confusing everyone else.
* Numerous UI Fixes - The infamous 'Raf's List Of UI Stuff' is about 70% done - some recommendations were just too much for this update.Source: XboxHomebrew