progress bars are just a rough estimate of progress. not like you divide up the work and when certain amounts of work is done. "well, time to add another bar!" lol that would be kinda funny.
edit: as funny as it seems, mta team(some of them) actually have lives, they all cant sit around all day and code, everyday... that also would be kinda funny plus, well, we'd have blue already if that was the case, i estimate at LEAST a year, look for GTA:SA PC before Blue is out, maybe 0.4.5 might be release around the PC SA release date. (thats my estimatation )