  Updated CLEO results are presented for branching ratios and four-momentum
transfer q^2 dependence of exclusive charmless semileptonic B decays, where the
final state hadron is either a pi, rho, omega, eta or eta'. These results have
comparable accuracies with those of other experiments. We address the issue of
flavor singlet couplings by limiting Gamma(B+ -> eta' l+ nu)/\Gamma(B+ -> eta
l+ nu)> 2.5 at 90 % CL}. We also extract a value of |V_{ub}|= (4.3 +/- 0.4
+/-0.2^{+0.6}_{-0.4})x10^{-3} in one particular unquenched lattice QCD model
using pi l+nu data above q^2 of 16 GeV^2.
