Could be. They've got to drop 1914 at some point, right? On the other hand, having read this forum since it started in 2000, I have got 1914 correctional fatigue at this point. It's been predicted so many times.
One time in the early 2000s in particular someone pointed out that 1914 hadn't been quoted in the WT for something like 6 months or more. But it was as if bethel was reading the forum, because there was a spate of 1914s after that.
Plus the comment might not mean anything, other than that GB like to assert their authority just for its own sake sometimes. Remember the WT a few years ago that said: be ready to following directions from the WT even if they appear to make no sense from a human standpoint. That was a pretty suggestive statement, but not much has come of it, so far.
As for what changes are likely, their history shows they only makes changes when events make the change necessary (dropping generation first time in 1995), legal challenges (selling literature or food at conventions) or if there is a financial motive (dropping district overseers and reducing magazines).
They've dug their heels in over blood and seem intent on simply waiting until new technology and medicine solves the problem for them. Plus shunning has been ramped up not scaled down.
They are much more likely to drop 1914 or the 144,000 teaching than they are to drop shunning or the blood ban in my view. Doctrinal changes like 1914 and 144,000 would be cheap to make and they would actually make sense, which is an unexpected bonus from this organisation.
If they do drop 1914 they'd need to revise even their Bible, now that they included 1914 in a picture in there as well.