Dont worry about a "B5" coming out first, the T2 came before the B2 and the T3 came before the B3.
As for the shocks, until recently I've ran ae cars since '95. They are good..IF you are willing to put in the work. Recently there has been bad batches of clips and shock bodies, that leads to major frustration. After getting my K-cars, there is a reason for all the hype on the shocks.
I hope a new truck and buggy are on the way, as well as the new losi 2 wheel, it will only help the 1/10th market which is SERIOUSLY struggling out by me.