Turbine has released a new store exclusive steed. Starting today until February 28, 2013, you can pick up the new Steed of the Khundolar.
The pictures of the war-steed model in-game but it will give you a good view of what the horse will look like.
d_malnati was nice enough to share a screenshot of the war-steed with the Khundolar items dyed sea blue. As you can see, very little on this horse actually changes colors. Basically anything that appears kind of pinkish/purplish in the above photos are the parts that dye and d_malnati also mentions it dyes a bit darker a color than normal.
Store Location: Travel & Housing -> Mounts -> Store Exclusive
This mount is as fast (+68%) and same morale (250 HP) as the previous store exclusive mounts with the same price tag. This steed is a per character purchase so be sure you spend the Turbine Points on the character you want riding this.
Purchasing this steed will also allow you the use of the appearance items for your War-steed (does not include hide/tail coloring).
If it is just the stats of the horse you are looking for, there are in-game alternatives. The Elf Ambassador and World Renown horses have equal stats but a different look. If it is the look of this steed that has you enamored, this is your only option.