  We present an update for results on $B$-meson semileptonic decays using the
highly improved staggered quark (HISQ) action for both valence and 2+1+1 sea
quarks. The use of the highly improved action, combined with the MILC
collaboration's gauge ensembles with lattice spacings down to $\sim$0.03 fm,
allows the $b$ quark to be treated with the same discretization as the lighter
quarks. The talk will focus on updated results for $B_{(s)} \to D_{(s)}$,
$B_{(s)} \to K$ scalar and vector form factors.
