For those who just can't wait for a trainer, there's a limited cheat option built in to the game.
First, go to your My Documents folder and find the Mount and Blade 2 folder. There's a folder in there called "Configs" and it contains a file called "engine_config.txt".
In that file, edit the value "cheat mode = 0" to "cheat mode = 1" and save the file.
Once that's done, you can start a new game with some cheating available. First, it puts 10 of every item and horse in game in your "Discard" pile every time you open the inventory screen. This doubles up as unlimited money because you can sell items worth over 100k dinars numerous times or trade for things you want.
Secondly, the old school Ctrl combinations for Health and Horse Health work, as well as the one that knocks out all enemies. You can also Ctrl click around the map without travel time as before. The XP and money cheats don't seem to do anything this time around.
Should tide most of us over until the proper trainer can be launched.