Personally, with the more frequent updates we're getting in X3, this is a positive swing in direction. What it means is that, when/if there is an issue or new feature, the next version isn't too far away and we are more likely to see a more incremental fix. I'm a fan of more frequent updates. Even though the letter following the X(
n) version may creep up higher than one would hope for, it does routinely show Cakewalk is on top of making fixes and updates.
So, I don't sell this short. With that said, if X3b is working fine and you experience an issue with X3c, then wait for X3d. It's also nice that these updates are comprehensive, meaning you can install X3a and go directly to X3c. I like that. The main thing I focus on is not which version I'm on, but rather, how well I'm able to work. If the DAW isn't in my way, I'm happy. Newer updates may fix bugs I've yet to run into, but I'm ok with that!
Here's to great times!