Unfortunately, not ever app on the market is iPad retina display ready. Apple has upgraded theirs, but that’s to be expected. Some third party apps have not been lucky enough to get things ready for the release. Others plan to capitalize on the new technology by being the first out the door with HD graphics.

Updating all of your apps graphics to keep up the new technology has proved to be a daunting task for most developers.

Here are some of the best HD apps out there right now. Expect many more to roll out in the next coming weeks.

Apple

You can’t go wrong with the official Apple apps, they were made specifically for the new iPad:

iPhoto
There’s so much power built into iPhoto for iOS, you need to touch it to believe it. Using only your fingers, you can make a blue sky bluer. A landscape greener. Or a smile brighter. From the moment you touch the screen, the way you see things will never be the same.

GarageBand
Whether you’re a musical prodigy or just love creating your own walls of sound, GarageBand for iOS gives you all the tools you need to lay down fresh tracks, have a jam session with friends, and record music anywhere you go.

Social

Twitter
Follow your interests like never before.

Facebook
See your friends pics in high def.

AIM for iPad
Instant messenger.

Business and Productivity

Evernote
The popular note taker and planner will feature crisp fonts.

Trulia
This real estate app will feature HD photos of your listings.

StockTouch
Watch the market unfold in high def.

Games

Infinity Blade II:

Mass Effect Infiltrator:
EA has updated the game for the retina display

Sky Gamblers Air Supremacy

Here is a full list of Apps that currently support the HD display:

ABC Player
AIM for iPad
Another Monster at the End of This Book
Art Authority
Barefoot World Atlas
Calcbot
The Daily
Day One
Diamond Dash
Dwellable
The Early Edition 2
Echofon
Evernote
Evernote Peek
Flight Control Rocket
Foosball HD
Galaxy on Fire 2 HD
Grace
Incredibooth
Infinity Blade II
iStopMotion for iPad
Joining Hands
Kindle
Labyrinth 2 HD
Martha Stewart Cookies
Mass Effect Infiltrator
Mint
MLS MatchDay 2012
Modern Combat 3
NBA GameTime
NYTimes for iPad
Order & Chaos Online
Quotes Folder
Readability
Real Racing 2 HD
Redfin
Reeder for iPad
SketchBook Pro for iPad
Skitch
Sky Gamblers: Air Supremacy
Solar Walk
Soundcloud
Star Walk for iPad
StockTouch
TouchGrind BMX
Trulia
Tweetbot for iPad
Twitter
Twitterrific
Vimeo
Facebook
Flipboard
Roambi Analytics
Roambi Flow
Wired

In the new HD version, players can enjoy detailed backdrops with different types of landscapes, which can be used in defense schemes. Attacks of enemy units are generated by a special algorithm, which makes each attack more challenging than the previous version. As opposed to other games of this genre, Defense Zone does not feature any superweapon.

Previous versions of Defense Zone were sometimes too challenging for some players. Therefore Easy and Medium modes have been made simpler in this version.

With OpenFeint support it is possible to compare your results with those of other players.

Game Features Include:- HD quality, detailed backdrops and impressive visual effects;
- balanced levels;
- weapons with different firepower, rate of fire, firing range, blast radius and price;
- different types of landscape;
- strategic thinking involved;
- support for OpenFeint;
- rated 12+.