I just saw the new COC update in the App Store and updated. It was just out a few minutes ago, because before that the servers were under maintanence.
First of all, the old loading screen is back, after a spooky Halloween theme. Alright, so right now I'm looking at the Bomb Level 2 upgrade. It's damage is 12+4, Re-arm cost is 400+100 (500). Once my Gold Storage is done in a few minutes, I'm going to upgrade it.
The Pumpkin Bomb does not look like it can be updated as it is a exclusive item. As of now, they have been removed from the store.
All the best, and I hope you like this update!
UPDATE: You all will recieve a message in your Inbox. This is what it will say:
Bigger booms, greedier goblins!
*Upgrade your traps and re-arm them after battle without having to revisit the shop
- Level 12 Archer Towers: stylish, deadly and oh so sharp
- Level 6 Goblins: never forget your wallet again, nor anyone else's
- Spell Factory boosting is now only 20 gems for 4 hours of boosting
UPDATE 2: My Bomb is now under construction. It will be completed in 15 minutes.