Although I am a little late on the punch, I am going to go on and post changes for 1.5.2:
◾[Bug MC-22] – Jukebox audio volume doesn’t decrease
◾[Bug MC-1123] – SMP: Anvils charge level for nothing when using languages other than English
◾[Bug MC-1407] – Tamed wolves and cats despawn
◾[Bug MC-4253] – Endermen are rendered hostile if they take environmental damage
◾[Bug MC-8112] – Pick-Block and Furnaces
◾[Bug MC-8260] – Achievement "Hot Topic" Uses Faceless Furnace Icon
◾[Bug MC-11229] – Using the anvil for free
◾[Bug MC-12133] – Arrows visually float when shot into a block.
◾Improvements to FPS when using high-resolution texture packs
◾Many Realms fixes.
So don't get 1.5.2 confused with the weekly snapshots that have actual new content in them. Also, if you are a person that does uses mods, there might not be a huge reason to update just yet!
◾[Bug MC-22] – Jukebox audio volume doesn’t decrease
◾[Bug MC-1123] – SMP: Anvils charge level for nothing when using languages other than English
◾[Bug MC-1407] – Tamed wolves and cats despawn
◾[Bug MC-4253] – Endermen are rendered hostile if they take environmental damage
◾[Bug MC-8112] – Pick-Block and Furnaces
◾[Bug MC-8260] – Achievement "Hot Topic" Uses Faceless Furnace Icon
◾[Bug MC-11229] – Using the anvil for free
◾[Bug MC-12133] – Arrows visually float when shot into a block.
◾Improvements to FPS when using high-resolution texture packs
◾Many Realms fixes.
So don't get 1.5.2 confused with the weekly snapshots that have actual new content in them. Also, if you are a person that does uses mods, there might not be a huge reason to update just yet!