So, several Oracle Mysteries have these fairly similar revelations. Flame & Volcano have "Touch of Flame," Stone has "Touch of Acid," Wind has "Touch of Electricity," and Waves and Winter have "Wintry Touch." They all allow the Oracle to make elemental-themed touch attacks a few times per day, and at 11th-level, each Revelation allows the Oracle to treat any weapon that they wield as if they had the Flaming/Frost/Shock/Flaming but with Acid Damage property.
Would an Unarmed Strike be counted as a weapon that the Oracle is wielding for the purposes of these revelations?
An unarmed strike counts always as a light weapon by the rules (see weapon descriptions under "Strike, unarmed" for details). So an oracle attacking with an unarmed strike would benefit from the relevation, for whatever that will be worth.
You can also use Revelation Strike to channel the touch attack through your unarmed strike.