Just had a walk and got some news from Final's representitive at PAF in Hong Kong. A new B series, is coming out.
If my memory is correct, (price not confirmed, just an estimated price)
B2 - 1BA ~250-400USD
B3 - 2BA ~500USD
B1 - 1BA + 1DD ~600USD
Have a quick listen to B1 & B3. both are very comfortable. The 2BA B3 is not hard to drive and sounds great. The 1BA +1DD B1 is hard to drive, cannot comment much because it hasn't burn it yet. The sound is relax. As a first thought I think I may like B3 more, but B1's soundstage and presentation maybe better if it's driven properly. I would like to try it with high gain or with balanced cable.
The E8000 would be renamed as A8000, as it's using a different driver from other earphone in E series. There would be an A7000 also. A8000 should be out this year, maybe in the summer.