sometimes 1 or 3 previews in a month. aaaaaaaaand there goes the pattern.Just going off his preview pattern, there is SOME consistency there. He usually posts at the end of the month and mid-month, so 2 preview renders in a month. We are on 8/15 with a preview ETA this week and one at the end of the month so that would end Feb on 10/15 with March on 12/15, April on 14/15 and May with 15/15 and the finish game.
UNLESS he does the unthinkable and actually gives us more previews per month and releases early.