I'm far from an expert but bitcoin XT is basically a patch set on top of Bitcoin Core that so far allows relaying of double spends and support for querying the UTXO set (useful for apps that use partial transactions). The plan is to incease the block size to 20MB (the number's still being debated) which will allow more transactions in each block (increases the number transactions per second).
It's being developed by Mike Hearn
https://github.com/bitcoinxt/bitcoinxtThere's a much better explanation about it here:
https://bitcointalk.org/index.php?topic=1076316.0Thanks for that link , really useful .
How about the GUI ? is it the same ? because I didn't understand it very well when you said set on top of Bitcoin Core and should we debug that project on Github our selfs to be able to use it ? there is no executable or DLL or whatever we need to just put it in a folder or something and just run it ?
any more informations are appreciated guyz
it's the same client, with some features added nothing crazily different, for now i don't think there is the exe ready, you need to compile it yourself using the code from github, yes
but no reason to hurry, it will be announced as a standard upgrade in the right time