The Rachel Patch will be up on the first week of September 2007. The features include set equipment, monster spawn changes, monster status changes, additional headgear and the most wonderful (for me) feature, slot enchantment (haha). And about the slot enchantment feature, it allows players to add new slots to existing gears. While only certain gears can be slotted, a variety of additional items are available only through the use of this system.
When slotting an item, the item cost and success rate varies based on the type and approximate rank of the item and you wish to add a slot to. The equipment you are slotting is completely destroyed and you are made a new one in its place should you succeed. This means that any upgrades, cards, or other modifiers applied to the original equipment will be lost during the enchantment. If the attempt fails, the items and zeny are completely lost.
Here's a list of the success rate when enchanting a slot to a gear or weapon.
C - 25% Success
B - 20% Success
A - 20% Success
S - 10% Success
See you on Ice Dungeon XD.