The Celebration Rules

[Whaleyland]

I quickly skimmed through them and couldn't find any variant rules for use in the base game, so I'm going to say no.

[Talisinbear]

I imagine there will be a fan idea soon enough

[CKorfmann]

There is already a fan variant idea by Sekim HERE.

[Talisinbear]

Neat

So when is the new stuff out on north america?

[Sekim]

I actually made some changes to the variant (basically a variant on the variant) for more confrontational use of the catapult side of the die. The variant is basically the same. Only the usage of the catapult side is changed. This time, when rolling a catapult, you can put a city under siege and making the city worth less. This can be done to a city for any player occupying the city or just to a single opponent by putting the catapult die underneath an opponents meeple. You can also use the catapult as a roadblock and split the road in 2 parts.
I havent had the time to write everything down yet, but as soon as I'm done with it, you'll find it in the previously mentioned topic.