Doubt it'll change any time soon, LT has been around since 1981 and Mouser has never stocked them.
Part of why I tend to order from Digi-Key for my personal projects despite the higher cost. They have the best selection of both manufacturers and parts, and have better service (than Mouser, don't know about Farnell) as well.
All hail Digi-Key, fucking awesomest of the distributors!