As of the February 2018 upgrade of the LAS and LCS software, TLS 1.2 is now supported.
Sites no longer need to deviate using the BWTST – TLS 1.0 & 1.1 for LAS or BWTST – TLS 1.0 & 1.1 for LAS with Security Filter GPOs.
BWTST will be submitting an RFC next month to have the GPO removed.