While we are waiting on the LMA's Working Sub-Group on Transition Issues in Syndicated Loan Markets to produce draft provisions dealing with the transition to SONIA, their US counterpart, the Alternative Reference Rates Committee (ARRC) has already done so for SOFR, the US dollar risk free rate (RFR), in its recent consultation paper "Regarding More Robust LIBOR Fallback Contract Language for New Originations of LIBOR Syndicated Business Loans".
The ARRC's approach is likely to be influential for the LMA in relation to transitional drafting for USD (and potentially for other currencies as well in the interests of consistency). The highlights of the ARRC consultation paper include: