It doesn´t seem very likely, because according to an interview with Lisa Gerrard which I recently read in a magazine, it seemed that she and Brendan didn´t get on too well with each other after their reunion-tour. However, in April, Lisa does a solo-tour in Europe (I´ll be seeing her live on April 18th) and her first solo-concerts in Australia and in May she tours in North America. Maybe she plays somewhere near your place and you still get tickets. Check her website
www.lisagerrard.com for the touring dates.