From the announcement:
Debuting at SALUTE, “Varjazi & Basileus” features a 12 page full colour rule booklet containing rules and lists for the Pagan Rus, the Era Of The Princes Rus and the Byzantines (as originally featured in a long sold-out issue of Wargames Illustrated.) There is also a new Hero Of The Viking Age for the Byzantines and a new Swords For Hire unit.
The booklet also comes with 3 battleboards (Rus, Pagan Rus & BYZANTINES,) all contained in a fantastic SAGA folder. Made of sturdy cardboard, this folder is full colour (inside and out) and provides an excellent way to transport rulebooks, supplements and battleboards.
There will be Starter Warbands for both the new factions and a full range of supporting blisters with many, many new figures (pictures soon) - all released at SALUTE!