According to documentation, Engineering Rev B is supported, but has to implement workaround...
Compatibility:
The SoftDevices that are supported in this SDK are not compatible
out-of-the-box with nRF52 Engineering A and Engineering B (the
IC revisions present on all versions of PCA10036 and on PCA10040
v0.9.0).
However, you can use the latest SoftDevices on Engineering A and B
nRF52 chips for development purposes if you implement the
workaround for anomaly 73 (TIMER: Event lost, see
infocenter.nordicsemi.com/.../errata.html).
