We are already making progress on both quality as well as the length of life.
From the 2013 NBER working paper "Evidence for Significant Compression of Morbidity In the Elderly U.S. Population":
"For a typical person aged 65, life expectancy increased by 0.7 years between 1992 and 2005. Disability-free life expectancy increased by 1.6 years; disabled life expectancy fell by 0.9 years.
"The reduction in disabled life expectancy and increase in disability-free life expectancy is true for both genders and for non-whites as well as whites. Hence, morbidity is being compressed into the period just before death."