That's true of every year up until Year 6. All ponies produced in Years 1-5 had unique poses that were only used for that year (unless they were rereleases of a previous pony and also some of the Sea Pony poses were reused).
Year 1: Collectors Pose
Year 2: Applejack Pose, Bubbles Pose, Glory Pose, Moondancer Pose, Firefly Pose
Year 3: Posey Pose, Tootsie Pose, Powder Pose, Gusty Pose, Heart Throb Pose, Baby Blossom Pose, Baby Ember Pose, Baby Cuddles Pose, Baby Glory Pose, Baby Firefly Pose
Year 4: Magic Star Pose, Shady Pose, Buttons Pose, Lofty Pose, Wind Whistler Pose, Baby Shady Pose, Baby Gusty Pose, Baby Heart Throb Pose, Rosedust Pose, Honeysuckle Pose
Year 5: Crumpet Pose, Sugarberry Pose, Mimic Pose, Dancing Butterflies Pose, Baby Tic Tac Toe Pose, Baby Quackers Pose, Baby North Star Pose, Milkweed Pose, Tumbleweed Pose, Sniffles Pose, Snookums Pose, Dibbles Pose, Cloud Puff Pose, Wingsong Pose, Tex Pose, Slugger Pose, Quarterback Pose
But in Year 6 Hasbro started reusing previous poses. There were still some new poses produced in Years 6-10 but it wasn't all brand-new poses every year like it was during the first 5 years.