The new version of Minecraft – Minecraft 1.6.4 has been released with many fixed bugs. If you are looking for free download link of Minecraft 1.6.4, just pull you mouse down and select a Minecraft download link for your operation!
Maybe, you are waiting for the next version – Minecraft 1.7, it will be coming soon. Mojang had soon released new interesting that will appear in 1.7. It is an update fixes world generation bugs. So you should use this version , load up important areas of your world, it will be a good foundation for Minecraft 1.7.