Hi, Alexandr. We recommend a release as "Most Stable" only after it's been performing in the field for a few months. Consequently, the "Most Stable" release often lags one or two patch levels behind the "Latest Feature" release.
Earlier today we updated the "Most Stable" and "Latest Feature" recommendations for EXOS 16.2.5.4 to patch1-5 and patch1-7, respectively. Note that for BDX8, we recommend running with these versions of EXOS 16.2, not with EXOS 15.x.
Larry Kunz
Information Development
Extreme Networks