Bump for some news:

First off, monsters for the Lunar Event, or so it is believed. They are blurred out, so we can't really get a good view on them.



Next off is a new dye system, as well as Living Rainbow and Living Flame dyes. Old is on the left, new is on the right.

How about a progress bar for invasions and moon events? It has been confirmed that this can be toggled.

Next off, we have the laser ruler. We don't know what is looks like yet, but it seems to be a helpful tool for builders.

The last spoiler for 1.3/1.2.5 has some changes made by Cenx herself! No more struggles to get The Axe and Living Wands!
This update's release date is unconfirmed as of now.
Now for the Mobile version, Hardmode has been released as well as the game being released on windows phone. You can now get to 400 life, like in the other versions. Auto targeting has been added. New drops have been added, like Mimics dropping Light Disks and Arch Demons dropping Crystal Shards, which doesn't make sense.
The last change doesn't involve the game itself, but it's WEBSITE. That's right, the official Terraria website has received an update, and the forum is soon to follow.
AND that's all folks! Enjoy those new spoilers and Mobile Hardmode!