  An overview over recent spectroscopy results in comparison with data is
given. We focus on the exotica Z_b(10610), Z_b(10650) and Y_b(10890) in the
bottom sector and discuss a possible connection to the exotica in the charm
sector, namely to the resonances Y_c(4260) and Z_c(3900). Furthermore, future
prospects for the determination of the nature of Y_b(10890) are outlined.
