Android 4.4 for Kepler Pro?

The eReader online store (the one associated with Booxtor) is offering the Kepler Pro. In the description of the Kepler Pro, it is said that an upgrade to 4.4 "is possible". This line does not appear in the description of the C67ML Carta 2+.

Is Onyx doing an official upgrade to 4.4 for the Kepler Pro? Or will this be like one of the unofficial upgrades for other devices already on the eReader site?