Yes, GSK/THRX are still developing triple combo of ICS/LABA/LAMA. In addition, they are also to develop next generation product Bifunctional Muscarinic Antagonist-Beta2 Agonist (MABA), with both muscarinic antagonist (MA) and beta2 agonist (BA) activities in one single molecule.
AZN new acquisition Pearl Therapeutics is developing ICS/LABA/LAMA triple combo as well.