As Herectic you should get +20% magic and thievery effectiveness, this bonus is applied to magic effectiveness just fine on the science page but it isn't added to thievery effectiveness.
The Heretic
Wizards do not die on failed spells
Thieves do not die on failed operations
Successful spell casts get 35% of rune cost refunded
+20% Spell Success
+20% Magic and Thievery Science Effectiveness.
Access to Nightmares and Blizzard
Starts with +100 Wizards and +200 thieves
Is it just me or is this actually a bug. The above was copied from the announcement section under age 70 changes.
Edit: Adding the math
I am gonna add the math for both Channeling and Crime Science
Channeling
Sci Page: 70.2% with 13 Graduates
Math: 13 * 1.5 * 3 * 1.2 = 70.2 - Graduates * Grad Multplier * Channeling Multiplier * Herectic Bonus
Crime:
Sci Page: 45% with 6 Novice and 6 Graduates
Math with bonus: (6 + 6 * 1.5) * 3 * 1.2 = 54 - (Novices + Graduates * Grad Multiplier) * Crime Multiplier * Herectic Bonus
Math w/o bonus: (6 + 6 * 1.5) * 3 = 45 - (Novices + Graduates * Grad Multiplier) * Crime Multiplier