It was in 2010 when Montblanc changed the manufacturer of their ink as well as the design of the bottle. The new colours launched include: Mystery Black, Royal Blue, Midnight Blue, Lavender Purple, Burgundy Red, Oyster Grey, Toffee Brown, Irish Green
Previous colours: Royal Blue, Blue-black, Black, Emerald Green, Ruby Red, Turquoise, Bordeaux, Sepia, Racing Green
In 2010 Montblanc updated the look of what was a classic ink bottle and issued a new, larger (60 ml vs 50 ml) bottle. I must say that I like the look of the bottle, but the not the new cap. The old cap has a real classic feel and look. The new cap is plastic and it looks like plastic.
This is a relatively expensive ink, up in price from the previous line. Some of the Montblanc colours have not appealed to me, they tend to be too watery while others, like the old Violet, and which is the same as the "new" Lavender Purple are inks that I use on a regular basis.