STO has had Kelvin stuff before, though, hasn't it? As has IDW. So I doubt it's connected.
Remember, when the license renewal was being negotiated a couple of years ago, we heard talk that Pocket was finally going to get a license to publish Kelvin stuff as part of it. It's not surprising that it might've taken a year or two to sort out the last details, decide on a publishing strategy, get the old books reapproved and re-edited, etc. Publishing is a slow business. Comics tend to move faster than prose, too, and other media like games surely move at their own pace too (I'm still waiting to see the publication of Star Trek Adventures campaigns I wrote a year and a half ago). So you can't read anything into simultaneity of release dates.
