Maybe.
I do believe that you can still update up to DL v1.5, DA v1.80g and TA v1.96 using Stardock Central. I'm not positive about this but I was still able to do so as of early this year and I doubt they would take that ability away as long as you still happen to have SDC installed.
Note that to get to v2.x of anything definitely does require Impulse which is why I'm still at DL v1.5, DA v1.80g and TA v1.96.