There was an original Marlin Model 1895, brought out in (yep) 1895. Marlin revived the model name for the .45-70 caliber gun they make for the western cowboy fad. But the new Model 1895 is really a Model 336 with changes to adapt it to the larger caliber, and a "western" stock. Other than the caliber and the stock, they are the same.
Aside from the question of a passing fad, the .45-70 is not a bad caliber (within its limitations, and it can be loaded hotter for that rifle), and will probably remain in the Marlin line indefinitely.
Jim