Emperor Event will be next month and I'm not sure about Artoo. No one is 100% but the theory is the same time frame as the Emperor event when it was legendary so possible December.
Back when the Emperor Event originally had the "Extremely Rare Event" tag on it, it took 6 months to return. Stands to reason now that the R2 event has the same wording, the timing will be similar.
Replies
RG and tarkin can have abilities 4-5 and Vader should be omegad
As and when the R2D2 event will return.I have the following empire toons at 7 star..
Darth Vader: Gear 11
Grand Moff Tarkin: Gear 11
General Veers:L Gear 10
Storm Trooper: Gear 10
Magma Trooper Gear 10
All maxed with Omega.