10 days of testing and I have had no issues. Lots of viewers however! Taking a wild guess that nothing is going to change until the anaconda distribution with python 3.7 upgrades their numpy and scipy versions as well.
For those that can't wait, or want to tempt fate, just provide version checks if you share your code with others.
I just now provide version checks until the python, numpy and scipy versions in Pro catch up.
As for people working with structured/recarrays in numpy and arcpy, there are some useful additions to numpy.
A version check for people working with versions < 1.16 can be done simply for some functions.
I just add any needed checks in subsequent lines for other numpy or scipy changes or additions in subsequent lines
v = np.version.version.split('.')[1]
if int(v) >= 16:
from numpy.lib.recfunctions import structured_to_unstructured as stu
Similarly for python
import sys
sys.version
'3.6.8 |Anaconda, Inc.| (default, Dec 30 2018, 18:50:55) [MSC v.1915 64 bit (AMD64)]'