I couldn't find it, but are tacticians still only allowed to use one tactical action a turn?
Old rules
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
I couldn't find it, but are tacticians still only allowed to use one tactical action a turn?
Yes.
The rules for Tactical have been added to the Legacy rules.