Apparently Sands of Time will now a be a constant drop from ST after beating Xande and Turn 6. Nice additions but I'm hoping that the next step in the Novus line isn't as RNG based. It does however sound more like the books we did to obtain the animus but with a time sink aspect added to it to probably keep people subbed for another month.

A weapon’s soul attunement level will rise by a set amount determined by the activity being performed. This amount, however, may increase each time a certain period of time passes. Thus sharing information with other players will be invaluable in planning the most efficient method of attunement.
Attunement progress can be verified through the use of the Zodiac glass.