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After PTR 3.0.8 changes, there are many changes too, here is the blue posts which is from the official site.

3.0.8 Druid Weapons: Polearms
As most of you likely know by now, Druids will be able to use Polearms when patch 3.0.8 goes live.  As with our Two-Hand Maces preview for Druids, we've also collected screenshots of a variety of Northrend Polearms to give you an idea of the options available to you.

 Item  Source
 [Deadly Gladiator's Pike]  Nargle Lashcord (4500 )
 [Cryptfiend's Bite]  Heigan the Unclean (Heroic: Naxxramas)
 [Black Ice]  Alexstrasza's Gift (The Eye of Eternity)
 [Wraith Spear]  Maexxna (Naxxramas)
 [Saliva Corroded Pike]  Moragg (Heroic: The Violet Hold)
 [Whale-Stick Harpoon]  Sairuk / Tanaika (82  45  45 )

Icy Prism Details
Over the past few days, I've been creating [Icy Prisms] to get decent data on their results.  Check out my Icy Prism results image for visual info (I also had a result of 2x[Scarlet Ruby] but didn't get a screenshot of it); so far it appears that you're guaranteed at least two gems.  In some cases, you may get lucky and get the high-selling gems on your server, in some... you may get two [Sky Sapphire].

However, according to clemm's post, you can also get [Dragon's Eye] from it, so it may not be too bad if you're really aching for that extra gem a day once you have all your recipes.

Mining Changes
The Mining changes mentioned in the latest PTR notes are now on the PTR as of build 9438.  Here are some details that I've found from going around to various zones (results included).

Cobalt Node and Rich Cobalt Node have been renamed to Cobalt Deposit and Rich Cobalt Deposit.
Saronite Node and Rich Saronite Node have been renamed to Saronite Deposit and Rich Saronite Deposit.
Titanium Node has been renamed to Titanium Vein.
When you mine a deposit, you'll get all of your ores and any crystallized elements in a single hit.  'Normal' deposits seem to provide a minimum of 2 ores and a maximum of 4.  As the notes say, overall ore from a single point should be about the same as previously.  (It can be assumed that 'Rich' deposits will provide 5-8 ores.)
Results
Cobalt Deposit Results
Saronite Deposit Results
Rich Saronite Deposit Results (Yes, I only found one the entire time.)
Titanium Vein Results
All-in-all, Mining feels a lot more fun than it used to with these changes.