http://forums.ac.turbine.com/showthread.php?&postid=615449#post615449
February: What You Need to Know
When you first log in you will notice a number of things have been changed about your character to match the new skills and systems we added to the game.
TLDR Version!
Here is a quick and dirty check list of the things you need to know when you log in after the February patch.
February Log In Checklist
~ Racial skills have been removed.
~ Arcane Lore is now trained on all characters as a racial skill.
~ If you used a racial weapon skill you will have to train or specialize a new weapon skill.
~ If you used a shield you will probably want to train or specialize the new Shield skill.
~ Some quest weapons might use different weapon skills.
~ Go get your free quest weapon in Arwic.
~ Go get your free weapon adjustment gems in Arwic.
Things You Need to Know
Weapon skills are reworked to use:
~ Heavy Weapons
~ Light Weapons
~ Finesse Weapons
~ Missile Weapons
~ Two Handed Combat.
(And there's much more... See link)