Just looked at the Title Update Log and saw this : - Added new items to the crafting menu - Melon, Melon Seeds, Glass Pane, Fence Gate, Iron Bars, Stone Bricks, Stone Brick Slabs, Stone Brick Stairs, Brick Slabs, Brick Stairs.
I didn't see pumpkin seeds. So did 4J forget to include those, or was it a typo?
- Added new items to the game - Melon, Melon Slice, Melon Seeds, Pumpkin Seeds, Raw/Cooked Beef, Raw/Cooked Chicken, Rotten Flesh, Iron Bars, Fence Gate, Stone Bricks, Stone Brick Slabs, Stone Brick Stairs, Brick Slabs, Brick Stairs, Ender Pearl, Web, Vines, 10 more Music Discs, Sponge and Chain Armor.
My guess is they just didn't add them to the crafting menu changelog section.