Are the time-bomb candies constant after level 100?

I recently got past level 100 and was introduced to the time-bomb candies, which count down and then bomb the whole board, ending the round. I like challenges and it's fun to find the right strategy for a level, even if it takes a lot of tries.  But the time bombs, for me, cross a line and make the challenge more stressful than fun, and that's not what I want in a game. Basically I just need to know if the time bombs are going to be a frequent component of the game from now on. If they're not, then I'll plug along until I'm past the levels in which they appear. But if so, I'd rather just ditch the game and not waste my time.