2.3 tomes question

[Thaliss]

I did not play much before 2.2 well not enough to be high enough to see the tomes but..before myth and i90 gear was there different gear or somthing? Do they phase out old tomes in favor of new ones and new gear?

You bought Darklight Gear with Philo tomes. It did not drop in dungeons and was a great upgrade.