I think it's safe to assume that they will leave the styles attached to the Undaunted event, since it fits thematically and they would would have no special prized for the Undaunted event if they used them for New Life (doubt they would do the same prizes twice in a row).
Makes you wonder if they'll add anything besides the Skaal Outfit pieces, Indrik Berry, and Indrik Pet, because at 5 tickets a day for the (assumed) 2 weeks, you'll end up with 70 tickets.
Although I guess you could buy the final Winter Berries (10 tickets), Winter Indrik Pet (10 tickets), and a complete set of feathers for a new Nascent Indrik (40 tickets) and still have 10 left over for the next event.
Update: Undaunted event has been rescheduled to Q1 2020. This is early/soon enough to make it unlikely they will rejig the New Life event to include Opal style pages.
The forum for some ungodly reason will not let me post a link, but if you go on twitter and look at the tweet about the Undaunted update and New Life there's a reply where they say that they will be keeping them for the Undaunted rerun in mid-January.