There are no accelerated commands any longer. At the moment they 'may' skip a small handfull who do not have the TOTAL time for command but that is it.
The upgrades are at over 4 years right now (at least on the 777 they are--group in April are all over 4). If you are hired today (or in the last year) you need to see 8500 pilots at EK to upgrade (double the number today).
With attrition that mean at least 7 years. I'd guess longer.