Here is a post from Eyonix about the upcoming stat and system changes to our gear, gems, etc. in WoW Cataclysm: [Source]
A couple key things to note concerning Retribution Paladins:

Reforging will allow re-distribution of certain stats.  Certain stat changes will not be permitted, such as Stamina to Strength.
Ret Paladins will …

Haste vs Armor Penetration.  Which stat is better for Ret Paladins?  There is a alot of argument and confusion over which stat seems to be better for a Ret Pally.  You can make very solid cases either way, but nothing is actually set in stone.  There ahave even been some …

Ret Paladin Hit Cap at Level 80
The hit cap for a Retribution Paladin at level 80 is 8%, or 263 Hit Rating.  At level 80, 32.79 Hit Rating equalys 1% hit.  Hit Rating reduces your chance to miss with white, special, and judgement damage.  Exorcism and Consecrate are spells, and …

Off-speccing protection is one of the many benefits of having a retribution paladin.  It is extremely useful to have the ability to jump into prot pally mode for raids or soloing purposes, and it is one I recently switched to myself.  With a desire to tackle more Molten Core and …

Playing as a Retribution Paladin in the PvE world far exceeds my expectations of most other classes. Our burst damage is still top notch, and we can just about nuke any non-dungeon mob in a couple hits. The down time for our class is next to nothing thanks to a …

Patch 3.3: Ret Paladin Gems is current for Patch 3.3.  No new changes with our gems and gem usage as ret paladins.  Hit cap is first, then you will be gemming for solid strength from that point on.
As a retribution paladin, your gem choice is going to be quite limited. …

I have further updated the talents page. Hopefully the information is a bit more comprehensive.
Khor

The sweat and blood is spent. The days of played time are over and you are now level 80! So what’s the first thing on people’s mind as they stand at the plateau of 80-hood? Gear. How can I gear up as quickly as possible?
I have …

Retribution Paladin Talents
Current for Patch 3.3 and Patch 3.3.2

The Ret Talent Tree seems to change with each content patch, as our DPS and damage output is modified by talent and ability changes. Retribution Paladin talents will primarily focus on the Retribution Tree, while dabbling in …

Patch 3.3: Ret Paladin Glyphs are current for Patch 3.3.  Nothing has changed to our best available glyphs as a ret pally, but I will keep an eye out for future amendments and will post them here.
Glyphs in World of Warcraft have become an important part of the game. The …